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Ferguson Missouri: Violence sparked by Michael Brown shooting, flares on streets again as National Guard troops are deployed

Ferguson Missouri pictures: huge show of force by police fails to quell unrest sparked by Michael Brown shooting Close

Police advance to clear people Monday, Aug. 18, 2014, during a protest for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

Police advance to clear people Monday, Aug. 18, 2014, during a protest for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

AP

 A demonstrator is arrested while protesting the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri.   (Photo by Scott Olson/Getty Images)

A demonstrator is arrested while protesting the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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A man stands in the street during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

A man stands in the street during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

AP

Missouri National Guard troops are deployed to provide protection for a police command centre on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9.  (Photo by Joe Raedle/Getty Images)

Missouri National Guard troops are deployed to provide protection for a police command centre on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9. (Photo by Joe Raedle/Getty Images)

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Jarvis Hollis, from St. Louis, holds his arms up as he walks through a group of police during a protest Tuesday, Aug. 19, 2014,in Ferguson, Mo., about  Michael Brown, who was killed by police Aug. 9 in Ferguson. Brown's shooting in the middle of a street has sparked more than week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

Jarvis Hollis, from St. Louis, holds his arms up as he walks through a group of police during a protest Tuesday, Aug. 19, 2014,in Ferguson, Mo., about Michael Brown, who was killed by police Aug. 9 in Ferguson. Brown's shooting in the middle of a street has sparked more than week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

AP

Members of the Missouri National Guard secure the perimeter of a police command post Tuesday, Aug. 19, 2014, in Ferguson, Mo. Ferguson's leaders urged residents Tuesday to stay home after dark to "allow peace to settle in" and pledged several actions to reconnect with the predominantly black community in the St. Louis suburb where the fatal shooting of 18-year-old Michael Brown has sparked nightly clashes between protesters and police. (AP Photo/Jeff Roberson)

Members of the Missouri National Guard secure the perimeter of a police command post Tuesday, Aug. 19, 2014, in Ferguson, Mo. Ferguson's leaders urged residents Tuesday to stay home after dark to "allow peace to settle in" and pledged several actions to reconnect with the predominantly black community in the St. Louis suburb where the fatal shooting of 18-year-old Michael Brown has sparked nightly clashes between protesters and police. (AP Photo/Jeff Roberson)

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A citizen peacekeeper tries to keep protesters back as police advance Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by a police officer has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

A citizen peacekeeper tries to keep protesters back as police advance Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by a police officer has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

AP

Demonstrators protest the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

Demonstrators protest the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Firefighters hose off the area where St. Louis police say officers shot and killed a 23-year-old man (Photo by Joe Raedle/Getty Images)

Firefighters hose off the area where St. Louis police say officers shot and killed a 23-year-old man (Photo by Joe Raedle/Getty Images)

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Missouri National Guard troops are deployed to provide protection for a police command centre on August 19, 2014 in Ferguson, Missouri. (Photo by Joe Raedle/Getty Images)

Missouri National Guard troops are deployed to provide protection for a police command centre on August 19, 2014 in Ferguson, Missouri. (Photo by Joe Raedle/Getty Images)

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Missouri National Guard troops are deployed to provide protection for a police command centre on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9.  (Photo by Joe Raedle/Getty Images)

Missouri National Guard troops are deployed to provide protection for a police command centre on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9. (Photo by Joe Raedle/Getty Images)

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Missouri National Guard troops are deployed to provide protection for a police command centre on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9.  (Photo by Joe Raedle/Getty Images)

Missouri National Guard troops are deployed to provide protection for a police command centre on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9. (Photo by Joe Raedle/Getty Images)

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USA man stands in front of police during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

USA man stands in front of police during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

AP

Capt. Ron Johnson of the Missouri Highway Patrol is surrounded by media after meeting with protesters Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by a police officer has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/Jeff Roberson)

Capt. Ron Johnson of the Missouri Highway Patrol is surrounded by media after meeting with protesters Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by a police officer has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/Jeff Roberson)

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People protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by police Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

People protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by police Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

AP

Kenneth McClain kneels in the street during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by police Aug. 9 in Ferguson, Mo. (AP Photo/Charlie Riedel)

Kenneth McClain kneels in the street during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by police Aug. 9 in Ferguson, Mo. (AP Photo/Charlie Riedel)

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Brigadier Gen. Greg Mason of the Missouri National Guard speaks to the media on Monday, Aug. 18, 2014, to explain the capacity his soldiers will take in securing the Ferguson protest area in the coming days. Unrest and tensions have been high since Ferguson Police Officer Darren Wilson fatally shot unarmed teen Michael Brown nine days ago. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

Brigadier Gen. Greg Mason of the Missouri National Guard speaks to the media on Monday, Aug. 18, 2014, to explain the capacity his soldiers will take in securing the Ferguson protest area in the coming days. Unrest and tensions have been high since Ferguson Police Officer Darren Wilson fatally shot unarmed teen Michael Brown nine days ago. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

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Police tackle a man who was walking down the street in front of McDonald's on Monday, Aug. 18, 2014, in Ferguson, Mo. The man appeared to be walking past a group that had been assembled nearby and police were telling everyone to keep walking. Moments after he turned around and exchanged words with the police that he was just walking, police took him to the ground. Although there is no curfew in order tonight, police are strictly enforcing protestors to keep moving along the sidewalk or they are subject to arrest. (AP Photo/St. Louis Post-Dispatch, Laurie Skrivan)

Police tackle a man who was walking down the street in front of McDonald's on Monday, Aug. 18, 2014, in Ferguson, Mo. The man appeared to be walking past a group that had been assembled nearby and police were telling everyone to keep walking. Moments after he turned around and exchanged words with the police that he was just walking, police took him to the ground. Although there is no curfew in order tonight, police are strictly enforcing protestors to keep moving along the sidewalk or they are subject to arrest. (AP Photo/St. Louis Post-Dispatch, Laurie Skrivan)

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A young boy tosses a football as people walk past a business boarded up to protect against looting Monday, Aug. 18, 2014, in Ferguson, Mo. Missouri Gov. Jay Nixon called in the National Guard Monday after police again used tear gas to quell protesters in the wake of the shooting of Michael Brown. (AP Photo/Jeff Roberson)

A young boy tosses a football as people walk past a business boarded up to protect against looting Monday, Aug. 18, 2014, in Ferguson, Mo. Missouri Gov. Jay Nixon called in the National Guard Monday after police again used tear gas to quell protesters in the wake of the shooting of Michael Brown. (AP Photo/Jeff Roberson)

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Protestors autograph a sketch of Michael Brown during a protest, Monday, Aug. 18, 2014, in Atlanta. Hundreds of demonstrators gathered in downtown Atlanta to protest the shooting death of Brown, an unarmed man who was fatally shot by a police officer in Ferguson, Missouri. (AP Photo/David Goldman)

Protestors autograph a sketch of Michael Brown during a protest, Monday, Aug. 18, 2014, in Atlanta. Hundreds of demonstrators gathered in downtown Atlanta to protest the shooting death of Brown, an unarmed man who was fatally shot by a police officer in Ferguson, Missouri. (AP Photo/David Goldman)

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People walk through the streets after a standoff with police Monday, Aug. 18, 2014, during a protest for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

People walk through the streets after a standoff with police Monday, Aug. 18, 2014, during a protest for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

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A citizen peacekeeper tries to keep protesters back as police advance Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by a police officer has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

A citizen peacekeeper tries to keep protesters back as police advance Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by a police officer has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

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A protester raises his arms following a clash with police Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

A protester raises his arms following a clash with police Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

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A member of the Missouri Highway Patrol is seen atop an armored personnel carrier Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/Jeff Roberson)

A member of the Missouri Highway Patrol is seen atop an armored personnel carrier Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/Jeff Roberson)

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A protester watches the confrontation between the police and demonstrators Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

A protester watches the confrontation between the police and demonstrators Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

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Protesters walk through a cloud of tear gas Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/Jeff Roberson)

Protesters walk through a cloud of tear gas Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/Jeff Roberson)

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A man tries to recover after being treated for tear gas during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

A man tries to recover after being treated for tear gas during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

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Police stand guard Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by a police officer has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

Police stand guard Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by a police officer has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

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Elle Lucier, center, is comforted by Shawn Walton, left, and Sheola Farquharson as she pauses while fighting back tears during a speech at a rally in response to the fatal shooting of Michael Brown, Monday, Aug. 18, 2014, in Atlanta. Hundreds of demonstrators gathered in downtown Atlanta to protest the shooting death of Brown, an unarmed man who was fatally shot by a police officer in Ferguson, Missouri. (AP Photo/David Goldman)

Elle Lucier, center, is comforted by Shawn Walton, left, and Sheola Farquharson as she pauses while fighting back tears during a speech at a rally in response to the fatal shooting of Michael Brown, Monday, Aug. 18, 2014, in Atlanta. Hundreds of demonstrators gathered in downtown Atlanta to protest the shooting death of Brown, an unarmed man who was fatally shot by a police officer in Ferguson, Missouri. (AP Photo/David Goldman)

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Police detain a protester Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

Police detain a protester Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

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Markese Mull lies in the street during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by police Aug. 9 in Ferguson, Mo. Missouri Gov. Jay Nixon called in the National Guard Monday after police again used tear gas to quell protesters in the wake of the shooting of Michael Brown. (AP Photo/Charlie Riedel)

Markese Mull lies in the street during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by police Aug. 9 in Ferguson, Mo. Missouri Gov. Jay Nixon called in the National Guard Monday after police again used tear gas to quell protesters in the wake of the shooting of Michael Brown. (AP Photo/Charlie Riedel)

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Police point out protesters Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

Police point out protesters Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

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A man is detained by police during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

A man is detained by police during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

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A man is detained after a standoff between protesters and police Monday, Aug. 18, 2014, during a protest for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

A man is detained after a standoff between protesters and police Monday, Aug. 18, 2014, during a protest for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

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FERGUSON, MO - AUGUST 19:  Demonstrators protest the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 19: Demonstrators protest the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 19:  Demonstrators protest the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 19: Demonstrators protest the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 19:  Demonstrators protest the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 19: Demonstrators protest the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 19:  Demonstrators protest the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 19: Demonstrators protest the killing of teenager Michael Brown on August 19, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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ST. LOUIS, MO - AUGUST 19:  People raise their arms while chanting, "Hands up, Don't Shoot", as they stand nearby to where St. Louis police say officers shot and killed a 23-year-old man who was wielding a knife and refused to drop it on August 19, 2014 in St Louis, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9.  (Photo by Joe Raedle/Getty Images)

ST. LOUIS, MO - AUGUST 19: People raise their arms while chanting, "Hands up, Don't Shoot", as they stand nearby to where St. Louis police say officers shot and killed a 23-year-old man who was wielding a knife and refused to drop it on August 19, 2014 in St Louis, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9. (Photo by Joe Raedle/Getty Images)

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ST LOUIS, MO - AUGUST 19: A bystander holds a shirt read, "Stop the Violence", as he stands nearby to where St. Louis police say officers shot and killed a 23-year-old man who was wielding a knife and refused to drop it on August 19, 2014 in St Louis, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9.  (Photo by Joe Raedle/Getty Images)

ST LOUIS, MO - AUGUST 19: A bystander holds a shirt read, "Stop the Violence", as he stands nearby to where St. Louis police say officers shot and killed a 23-year-old man who was wielding a knife and refused to drop it on August 19, 2014 in St Louis, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 19:  Missouri National Guard troops are deployed to provide protection for a police command center on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 19: Missouri National Guard troops are deployed to provide protection for a police command center on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 19:  Missouri National Guard troops are deployed to provide protection for a police command center on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 19: Missouri National Guard troops are deployed to provide protection for a police command center on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 19:  Missouri National Guard troops are deployed to provide protection for a police command center on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 19: Missouri National Guard troops are deployed to provide protection for a police command center on August 19, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18: Frederick Scott protests the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Frederick Scott protests the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police lob tear gas at people walking near a protest over the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police lob tear gas at people walking near a protest over the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  A demonstrator protects himself from tear gas during a protest over the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: A demonstrator protects himself from tear gas during a protest over the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police take cover as shots are fired during a protest over the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police take cover as shots are fired during a protest over the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18: A demonstrator protesting the shooting death of Michael Brown wears a gas mask on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: A demonstrator protesting the shooting death of Michael Brown wears a gas mask on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police officers arrest a demonstrator on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Police officers arrest a demonstrator on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18: Demonstrators  cover their faces as tear gas fills the air as police fire the gas against an unruly crowd protesting the shooting death of Michael Brown on August 18, 2014 in Ferguson, Missouri. Police sprayed pepper spray, shot smoke, gas and flash grenades as violent outbreaks have taken place in Ferguson since the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Demonstrators cover their faces as tear gas fills the air as police fire the gas against an unruly crowd protesting the shooting death of Michael Brown on August 18, 2014 in Ferguson, Missouri. Police sprayed pepper spray, shot smoke, gas and flash grenades as violent outbreaks have taken place in Ferguson since the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Demonstrators protesting the shooting death of Michael Brown make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Demonstrators protesting the shooting death of Michael Brown make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police officers arrest a demonstrator on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Police officers arrest a demonstrator on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Demonstrators protesting the shooting death of Michael Brown make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Demonstrators protesting the shooting death of Michael Brown make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Police officers work to keep order as demonstrators express their feelings on August 18, 2014 in Ferguson, Missouri. Violent outbreaks have taken place in Ferguson since the shooting death of unarmed teenager Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Demonstrators protesting the shooting death of Michael Brown chant, " Hands up, Don't Shoot", as they make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Demonstrators protesting the shooting death of Michael Brown chant, " Hands up, Don't Shoot", as they make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Rapper Nelly joins demonstrators protesting the shooting death of Michael Brown as they make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Rapper Nelly joins demonstrators protesting the shooting death of Michael Brown as they make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Demonstrators protesting the shooting death of Michael Brown make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Demonstrators protesting the shooting death of Michael Brown make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Demonstrators protesting the shooting death of Michael Brown hold red roses on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Demonstrators protesting the shooting death of Michael Brown hold red roses on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Rapper Nelly joins demonstrators protesting the shooting death of Michael Brown as they make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Rapper Nelly joins demonstrators protesting the shooting death of Michael Brown as they make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Getty Images staff photographer Scott Olson is placed into a paddy wagon after being arrested by police as he covers the demonstration following the shooting death of Michael Brown on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Getty Images staff photographer Scott Olson is placed into a paddy wagon after being arrested by police as he covers the demonstration following the shooting death of Michael Brown on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Getty Images staff photographer Scott Olson is placed into a paddy wagon after being arrested by police as he covers the demonstration following the shooting death of Michael Brown on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Getty Images staff photographer Scott Olson is placed into a paddy wagon after being arrested by police as he covers the demonstration following the shooting death of Michael Brown on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police arrest a demonstrator protesting the shooting death of Michael Brown on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

FERGUSON, MO - AUGUST 18: Police arrest a demonstrator protesting the shooting death of Michael Brown on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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FERGUSON, MO - AUGUST 18:  Demonstrators continue to protest the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri.  After a protest yesterday ended with a barrage of tear gas and gunfire, Missouri Governor Jay Nixon activated the national guard to help with security. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Demonstrators continue to protest the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. After a protest yesterday ended with a barrage of tear gas and gunfire, Missouri Governor Jay Nixon activated the national guard to help with security. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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A member of the Missouri Highway Patrol is seen atop an armored personnel carrier Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/Jeff Roberson)

A member of the Missouri Highway Patrol is seen atop an armored personnel carrier Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/Jeff Roberson)

AP

A man tries to recover after being treated for tear gas during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

A man tries to recover after being treated for tear gas during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

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Police stand guard Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by a police officer has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

Police stand guard Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by a police officer has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

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Markese Mull lies in the street during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by police Aug. 9 in Ferguson, Mo. Missouri Gov. Jay Nixon called in the National Guard Monday after police again used tear gas to quell protesters in the wake of the shooting of Michael Brown. (AP Photo/Charlie Riedel)

Markese Mull lies in the street during a protest Monday, Aug. 18, 2014, for Michael Brown, who was killed by police Aug. 9 in Ferguson, Mo. Missouri Gov. Jay Nixon called in the National Guard Monday after police again used tear gas to quell protesters in the wake of the shooting of Michael Brown. (AP Photo/Charlie Riedel)

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FERGUSON, MO - AUGUST 18: Frederick Scott protests the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Frederick Scott protests the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police lob tear gas at people walking near a protest over the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police lob tear gas at people walking near a protest over the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 18:  Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly.  Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 18: Police attempt to control demonstrators protesting the killing of teenager Michael Brown on August 18, 2014 in Ferguson, Missouri. Police shot smoke and tear gas to disperse the protestors with as they became unruly. Brown was shot and killed by a Ferguson police officer on August 9. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death. (Photo by Scott Olson/Getty Images)

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A citizen peacekeeper tries to keep protesters back as police advance Monday, Aug. 18, 2014, in Ferguson, Missouri. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

A citizen peacekeeper tries to keep protesters back as police advance Monday, Aug. 18, 2014, in Ferguson, Missouri. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)

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Missouri State Highway Patrol officers listen to taunts from demonstrators during a protest over the shooting of Michael Williams on August 15, 2014 in Ferguson, Missouri.   (Photo by Scott Olson/Getty Images)

Missouri State Highway Patrol officers listen to taunts from demonstrators during a protest over the shooting of Michael Williams on August 15, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Police confront demonstrators during a protest over the shooting of Michael Williams on August 15, 2014 in Ferguson, Missouri.  (Photo by Scott Olson/Getty Images)

Police confront demonstrators during a protest over the shooting of Michael Williams on August 15, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Tactical trucks move down the street through tear gas in Ferguson, Sunday, Aug. 17, 2014. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

Tactical trucks move down the street through tear gas in Ferguson, Sunday, Aug. 17, 2014. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

AP

A protester runs down the street to escape tear gas fired at demonstrators on Sunday, Aug. 17, 2014, in Ferguson (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

A protester runs down the street to escape tear gas fired at demonstrators on Sunday, Aug. 17, 2014, in Ferguson (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

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Police set up a perimeter to confront demonstrators during a protest over the shooting of Michael Williams on August 15, 2014 in Ferguson, Missouri.    (Photo by Scott Olson/Getty Images)

Police set up a perimeter to confront demonstrators during a protest over the shooting of Michael Williams on August 15, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Police put on riot gear to confront demonstrators during a protest over the shooting of Michael Williams on August 15, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

Police put on riot gear to confront demonstrators during a protest over the shooting of Michael Williams on August 15, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Police confront demonstrators during a protest over the shooting death of Michael Williams on August 15, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

Police confront demonstrators during a protest over the shooting death of Michael Williams on August 15, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Police are deployed to keep peace along Florissant Avenue on August 16, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

Police are deployed to keep peace along Florissant Avenue on August 16, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Demonstrators protesting the shooting death of Michael Brown hold signs on August 16, 2014 in Ferguson, Missouri.  (Photo by Joe Raedle/Getty Images)

Demonstrators protesting the shooting death of Michael Brown hold signs on August 16, 2014 in Ferguson, Missouri. (Photo by Joe Raedle/Getty Images)

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Police fire tear gas at demonstrators protesting the shooting of Michael Brown after they refused to honour the midnight curfew on August 17, 2014 in Ferguson, Missouri.  (Photo by Scott Olson/Getty Images)

Police fire tear gas at demonstrators protesting the shooting of Michael Brown after they refused to honour the midnight curfew on August 17, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Police fire tear gas at demonstrators protesting the shooting of Michael Brown after they refused to honour the midnight curfew on August 17, 2014 in Ferguson, Missouri.  (Photo by Scott Olson/Getty Images)

Police fire tear gas at demonstrators protesting the shooting of Michael Brown after they refused to honour the midnight curfew on August 17, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Female police officers stand guard before the mandatory midnight curfew on August 16, 2014 in Ferguson, Missouri.  (Photo by Scott Olson/Getty Images)

Female police officers stand guard before the mandatory midnight curfew on August 16, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Demonstrators protesting the shooting death of Michael Brown make their voices heard on August 17, 2014 in Ferguson, Missouri. (Photo by Joe Raedle/Getty Images)

Demonstrators protesting the shooting death of Michael Brown make their voices heard on August 17, 2014 in Ferguson, Missouri. (Photo by Joe Raedle/Getty Images)

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A demonstrator picks up a tear gas canister to throw back at police after they fired the gas at  them while protesting the shooting death of Michael Brown on August 17, 2014 in Ferguson, Missouri.   (Photo by Joe Raedle/Getty Images)

A demonstrator picks up a tear gas canister to throw back at police after they fired the gas at them while protesting the shooting death of Michael Brown on August 17, 2014 in Ferguson, Missouri. (Photo by Joe Raedle/Getty Images)

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Demonstrators raise their arms and chant, "Hands up, Don't Shoot", as police clear them from the street as they protest the shooting death of Michael Brown on August 17, 2014 in Ferguson, Missouri. Police sprayed pepper spray, shot smoke, gas and flash grenades as violent outbreaks have taken place in Ferguson since the shooting death of Michael Brown by a Ferguson police officer on August 9th.  (Photo by Joe Raedle/Getty Images)

Demonstrators raise their arms and chant, "Hands up, Don't Shoot", as police clear them from the street as they protest the shooting death of Michael Brown on August 17, 2014 in Ferguson, Missouri. Police sprayed pepper spray, shot smoke, gas and flash grenades as violent outbreaks have taken place in Ferguson since the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images)

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A woman has her face doused with milk after being tear gassed by police as she was protesting Michael Brown's murder August 17, 2014 in Ferguson, Missouri.  (Photo by Joshua Lott/Getty Images)

A woman has her face doused with milk after being tear gassed by police as she was protesting Michael Brown's murder August 17, 2014 in Ferguson, Missouri. (Photo by Joshua Lott/Getty Images)

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Police stand guard before the mandatory midnight curfew on August 16, 2014 in Ferguson, Missouri.  (Photo by Scott Olson/Getty Images)

Police stand guard before the mandatory midnight curfew on August 16, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Law enforcement officers wait to advance Sunday, Aug. 17, 2014, after firing tear gas to disperse a crowd protesting the shooting of teenager Michael Brown last Saturday in Ferguson, Mo. Brown's shooting in the middle of a street following a suspected robbery of a box of cigars from a nearby market has sparked a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

Law enforcement officers wait to advance Sunday, Aug. 17, 2014, after firing tear gas to disperse a crowd protesting the shooting of teenager Michael Brown last Saturday in Ferguson, Mo. Brown's shooting in the middle of a street following a suspected robbery of a box of cigars from a nearby market has sparked a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

AP

Captain Ron Johnson of Missouri State Highway Patrol addresses protesters in Ferguson (AP/St Louis Post-Dispatch)

Captain Ron Johnson of Missouri State Highway Patrol addresses protesters in Ferguson (AP/St Louis Post-Dispatch)

Marie Paul is arrested is arrested by police in the James Lawrence King Federal Justice Building where the US Attorneys Office, Southern District of Florida, is located on August 14, 2014 in Miami, Florida. (Photo by Joe Raedle/Getty Images)

Marie Paul is arrested is arrested by police in the James Lawrence King Federal Justice Building where the US Attorneys Office, Southern District of Florida, is located on August 14, 2014 in Miami, Florida. (Photo by Joe Raedle/Getty Images)

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Demonstrators hold candles and signs during a moment of silence on August 14, 2014 in Oakland, California.  (Photo by Justin Sullivan/Getty Images)

Demonstrators hold candles and signs during a moment of silence on August 14, 2014 in Oakland, California. (Photo by Justin Sullivan/Getty Images)

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Demonstrators hold their hands up during a moment of silence on August 14, 2014 in Oakland, California. (Photo by Justin Sullivan/Getty Images)

Demonstrators hold their hands up during a moment of silence on August 14, 2014 in Oakland, California. (Photo by Justin Sullivan/Getty Images)

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Demetrus Washington joins other demonstrators protesting the shooting death of teenager Michael Brown on August 14, 2014 in Ferguson, Missouri.  (Photo by Scott Olson/Getty Images)

Demetrus Washington joins other demonstrators protesting the shooting death of teenager Michael Brown on August 14, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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A police officer keeps watch over demonstrators protesting the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

A police officer keeps watch over demonstrators protesting the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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A police officer watches over demonstrators protesting the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

A police officer watches over demonstrators protesting the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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A demonstrator, protesting the shooting death of teenager Michael Brown, stands his ground as police fire tear gas on August 13, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

A demonstrator, protesting the shooting death of teenager Michael Brown, stands his ground as police fire tear gas on August 13, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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Police surround and detain two people in a car on August 13, 2014 in Ferguson, Missouri.  (Photo by Scott Olson/Getty Images)

Police surround and detain two people in a car on August 13, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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A young woman walks from a corner after police standing near the corner fired tear gas at her on August 13, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

A young woman walks from a corner after police standing near the corner fired tear gas at her on August 13, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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A police officer patrols a business district on August 13, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

A police officer patrols a business district on August 13, 2014 in Ferguson, Missouri. (Photo by Scott Olson/Getty Images)

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A protester takes shelter from smoke billowing around him Wednesday, Aug. 13, 2014, in Freguson, Mo.  (AP Photo/St. Louis Post-Dispatch, David Carson)

A protester takes shelter from smoke billowing around him Wednesday, Aug. 13, 2014, in Freguson, Mo. (AP Photo/St. Louis Post-Dispatch, David Carson)

AP

A demonstrator throws back a tear gas container after tactical officers worked to break up a group of bystanders on Chambers Road and West Florissant on Wednesday, Aug. 13, 2014 in St. Louis. (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

A demonstrator throws back a tear gas container after tactical officers worked to break up a group of bystanders on Chambers Road and West Florissant on Wednesday, Aug. 13, 2014 in St. Louis. (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

AP

Tactical officers fire tear gas on Monday, Aug. 11, 2014, in Ferguson, Mo. Authorities in Ferguson used tear gas and rubber bullets to try to disperse a large crowd (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

Tactical officers fire tear gas on Monday, Aug. 11, 2014, in Ferguson, Mo. Authorities in Ferguson used tear gas and rubber bullets to try to disperse a large crowd (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

AP

Police officers work their way north on West Florissant Avenue in Ferguson, Mo., clearing the road with the use of tear gas and smoke bombs Wednesday, Aug. 13, 2014.  (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

Police officers work their way north on West Florissant Avenue in Ferguson, Mo., clearing the road with the use of tear gas and smoke bombs Wednesday, Aug. 13, 2014. (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

AP

Protesters raise their hands in front of police atop an armoured vehicle in Ferguson, Mo. on Wednesday, Aug. 13, 2014.(AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

Protesters raise their hands in front of police atop an armoured vehicle in Ferguson, Mo. on Wednesday, Aug. 13, 2014.(AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

AP

A member of the St. Louis County Police Department points his weapon in the direction of a group of protesters in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/Jeff Roberson)

A member of the St. Louis County Police Department points his weapon in the direction of a group of protesters in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/Jeff Roberson)

AP

A member of the St. Louis County Police Department points his weapon in the direction of a group of protesters in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/Jeff Roberson)

A member of the St. Louis County Police Department points his weapon in the direction of a group of protesters in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/Jeff Roberson)

AP

Protesters raise their hands in front of police atop an armored vehicle in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

Protesters raise their hands in front of police atop an armored vehicle in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

AP

A member of the St. Louis County Police Department points his weapon in the direction of a group of protesters in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/Jeff Roberson)

A member of the St. Louis County Police Department points his weapon in the direction of a group of protesters in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/Jeff Roberson)

AP

Police officers work their way north on West Florissant Avenue in Ferguson, Mo., clearing the road with the use of tear gas and smoke bombs Wednesday, Aug. 13, 2014. Protests in the St. Louis suburb rocked by racial unrest since a white police officer shot an unarmed black teenager to death turned violent Wednesday night, with some people lobbing Molotov cocktails and other objects at police who responded with smoke bombs and tear gas to disperse the crowd. (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

Police officers work their way north on West Florissant Avenue in Ferguson, Mo., clearing the road with the use of tear gas and smoke bombs Wednesday, Aug. 13, 2014. Protests in the St. Louis suburb rocked by racial unrest since a white police officer shot an unarmed black teenager to death turned violent Wednesday night, with some people lobbing Molotov cocktails and other objects at police who responded with smoke bombs and tear gas to disperse the crowd. (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

AP

An explosive device deployed by police flies in the air as police and protesters clash Wednesday, Aug. 13, 2014, in Ferguson, Mo.  Protests in the St. Louis suburb rocked by racial unrest since a white police officer shot an unarmed black teenager to death turned violent Wednesday night, with people lobbing molotov cocktails at police who responded with smoke bombs and tear gas to disperse the crowd.  (AP Photo/Jeff Roberson)

An explosive device deployed by police flies in the air as police and protesters clash Wednesday, Aug. 13, 2014, in Ferguson, Mo. Protests in the St. Louis suburb rocked by racial unrest since a white police officer shot an unarmed black teenager to death turned violent Wednesday night, with people lobbing molotov cocktails at police who responded with smoke bombs and tear gas to disperse the crowd. (AP Photo/Jeff Roberson)

AP

Police walk through a cloud of smoke as they clash with protesters Wednesday, Aug. 13, 2014, in Ferguson (AP Photo/Jeff Roberson)

Police walk through a cloud of smoke as they clash with protesters Wednesday, Aug. 13, 2014, in Ferguson (AP Photo/Jeff Roberson)

AP

A device deployed by police goes off in the street as police and protesters clash Wednesday, Aug. 13, 2014, in Ferguson, Mo. Authorities in the St. Louis suburb where an unarmed black teen was shot and killed by a police officer have used tear gas to try to disperse protesters after flaming projectiles were thrown from the crowd. (AP Photo/Jeff Roberson)

A device deployed by police goes off in the street as police and protesters clash Wednesday, Aug. 13, 2014, in Ferguson, Mo. Authorities in the St. Louis suburb where an unarmed black teen was shot and killed by a police officer have used tear gas to try to disperse protesters after flaming projectiles were thrown from the crowd. (AP Photo/Jeff Roberson)

AP

A protester shouts as she moves away from a line of riot police in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

A protester shouts as she moves away from a line of riot police in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

AP

A demonstrator throws back a tear gas container after tactical officers try to break up a group of bystanders Wednesday, Aug. 13, 2014 in West Florissant, Missouri (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

A demonstrator throws back a tear gas container after tactical officers try to break up a group of bystanders Wednesday, Aug. 13, 2014 in West Florissant, Missouri (AP Photo/St. Louis Post-Dispatch, Robert Cohen)

AP

A protester takes shelter from smoke billowing around him Wednesday, Aug. 13, 2014, in Freguson, Mo. Protests in the St. Louis suburb rocked by racial unrest since a white police officer shot an unarmed black teenager to death turned violent Wednesday night, with some people lobbing Molotov cocktails and other objects at police who responded with smoke bombs and tear gas to disperse the crowd. (AP Photo/St. Louis Post-Dispatch, David Carson)

A protester takes shelter from smoke billowing around him Wednesday, Aug. 13, 2014, in Freguson, Mo. Protests in the St. Louis suburb rocked by racial unrest since a white police officer shot an unarmed black teenager to death turned violent Wednesday night, with some people lobbing Molotov cocktails and other objects at police who responded with smoke bombs and tear gas to disperse the crowd. (AP Photo/St. Louis Post-Dispatch, David Carson)

AP

FERGUSON, MO - AUGUST 13:  Police stand watch as demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Police stand watch as demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Police stand watch as demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Police stand watch as demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Police stand watch as demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Police stand watch as demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Police stand watch as demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Police stand watch as demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13: A police officer standing watch as demonstrators protest the shooting death of teenager Michael Brown conceals his/her identity on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)g

FERGUSON, MO - AUGUST 13: A police officer standing watch as demonstrators protest the shooting death of teenager Michael Brown conceals his/her identity on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)g

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FERGUSON, MO - AUGUST 13:  Police stand watch as demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Police stand watch as demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  A demonstrator protesting the shooting death of teenager Michael Brown carries what appears to be a Molotov cocktail on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: A demonstrator protesting the shooting death of teenager Michael Brown carries what appears to be a Molotov cocktail on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Demonstrators, protesting the shooting death of teenager Michael Brown, scramble for cover as police fire tear gas on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Demonstrators, protesting the shooting death of teenager Michael Brown, scramble for cover as police fire tear gas on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  A demonstrator, protesting the shooting death of teenager Michael Brown, scrambles for cover as police fire tear gas on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: A demonstrator, protesting the shooting death of teenager Michael Brown, scrambles for cover as police fire tear gas on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Demonstrators, protesting the shooting death of teenager Michael Brown, scramble for cover as police fire tear gas on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Demonstrators, protesting the shooting death of teenager Michael Brown, scramble for cover as police fire tear gas on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  A police officer patrols a business district on August 13, 2014 in Ferguson, Missouri. Ferguson is experiencing its fourth day of unrest after following the shooting death of teenager Michael Brown on Saturday. Brown was shot and killed by a Ferguson police officer.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: A police officer patrols a business district on August 13, 2014 in Ferguson, Missouri. Ferguson is experiencing its fourth day of unrest after following the shooting death of teenager Michael Brown on Saturday. Brown was shot and killed by a Ferguson police officer. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  A young woman walks from a corner after police standing near the corner fired tear gas at her on August 13, 2014 in Ferguson, Missouri. Ferguson is experiencing its fourth day of unrest after following the shooting death of teenager Michael Brown on Saturday. Brown, who was not armed was shot and killed by a Ferguson police officer. (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: A young woman walks from a corner after police standing near the corner fired tear gas at her on August 13, 2014 in Ferguson, Missouri. Ferguson is experiencing its fourth day of unrest after following the shooting death of teenager Michael Brown on Saturday. Brown, who was not armed was shot and killed by a Ferguson police officer. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Demonstrators, protesting the shooting death of teenager Michael Brown, flee as police shoot tear gas into the crowd of several hundred after someone reportedly threw a bottle at the line of police on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Demonstrators, protesting the shooting death of teenager Michael Brown, flee as police shoot tear gas into the crowd of several hundred after someone reportedly threw a bottle at the line of police on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Demonstrators, protesting the shooting death of teenager Michael Brown, flee as police shoot tear gas into the crowd of several hundred after someone reportedly threw a bottle at the line of police on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Demonstrators, protesting the shooting death of teenager Michael Brown, flee as police shoot tear gas into the crowd of several hundred after someone reportedly threw a bottle at the line of police on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Demonstrators, protesting the shooting death of teenager Michael Brown, flee as police shoot tear gas into the crowd of several hundred after someone reportedly threw a bottle at the line of police on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Demonstrators, protesting the shooting death of teenager Michael Brown, flee as police shoot tear gas into the crowd of several hundred after someone reportedly threw a bottle at the line of police on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13: A demonstrator, protesting the shooting death of teenager Michael Brown, stands his ground as police fire tear gas on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images) *** BESTPIX ***

FERGUSON, MO - AUGUST 13: A demonstrator, protesting the shooting death of teenager Michael Brown, stands his ground as police fire tear gas on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images) *** BESTPIX ***

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FERGUSON, MO - AUGUST 13: A demonstrator, protesting the shooting death of teenager Michael Brown, stands his ground as police fire tear gas on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: A demonstrator, protesting the shooting death of teenager Michael Brown, stands his ground as police fire tear gas on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Police surround and detain two people in a car on August 13, 2014 in Ferguson, Missouri. Ferguson is experiencing its fourth day of unrest after following the shooting death of teenager Michael Brown on Saturday. Brown was shot and killed by a Ferguson police officer.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Police surround and detain two people in a car on August 13, 2014 in Ferguson, Missouri. Ferguson is experiencing its fourth day of unrest after following the shooting death of teenager Michael Brown on Saturday. Brown was shot and killed by a Ferguson police officer. (Photo by Scott Olson/Getty Images)

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FERGUSON, MO - AUGUST 13:  Demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing.  (Photo by Scott Olson/Getty Images)

FERGUSON, MO - AUGUST 13: Demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. Brown was shot and killed by a Ferguson police officer on Saturday. Ferguson, a St. Louis suburb, is experiencing its fourth day of violent protests since the killing. (Photo by Scott Olson/Getty Images)

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A man watches as police walk through a cloud of smoke during a clash with protesters Wednesday, Aug. 13, 2014, in Ferguson, Mo. Protests in the St. Louis suburb rocked by racial unrest since a white police officer shot an unarmed black teenager to death turned violent Wednesday night, with people lobbing Molotov cocktails at police who responded with smoke bombs and tear gas to disperse the crowd. (AP Photo/Jeff Roberson)

A man watches as police walk through a cloud of smoke during a clash with protesters Wednesday, Aug. 13, 2014, in Ferguson, Mo. Protests in the St. Louis suburb rocked by racial unrest since a white police officer shot an unarmed black teenager to death turned violent Wednesday night, with people lobbing Molotov cocktails at police who responded with smoke bombs and tear gas to disperse the crowd. (AP Photo/Jeff Roberson)

AP

People protest as tear gas canisters detonate around them on Wednesday, Aug. 13, 2014, in Ferguson, Mo. Protests in the St. Louis suburb rocked by racial unrest since a white police officer shot an unarmed black teenager to death turned violent Wednesday night, with people lobbing molotov cocktails at police who responded with smoke bombs and tear gas to disperse the crowd. (AP Photo/St. Louis Post-Dispatch, Chris Lee)

People protest as tear gas canisters detonate around them on Wednesday, Aug. 13, 2014, in Ferguson, Mo. Protests in the St. Louis suburb rocked by racial unrest since a white police officer shot an unarmed black teenager to death turned violent Wednesday night, with people lobbing molotov cocktails at police who responded with smoke bombs and tear gas to disperse the crowd. (AP Photo/St. Louis Post-Dispatch, Chris Lee)

AP

A line of police wait for demostrators at Canfield Avenue after they had walked down W. Florissant in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

A line of police wait for demostrators at Canfield Avenue after they had walked down W. Florissant in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

AP

A march organized by area ministers makes its way down W. Florissant in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

A march organized by area ministers makes its way down W. Florissant in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/St. Louis Post-Dispatch, J.B. Forbes)

AP

A member of the St. Louis County Police Department points his weapon in the direction of a group of protesters in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/Jeff Roberson)

A member of the St. Louis County Police Department points his weapon in the direction of a group of protesters in Ferguson, Mo. on Wednesday, Aug. 13, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb. (AP Photo/Jeff Roberson)

AP

A device deployed by police goes off in the street during the clash with protesters in Ferguson, Missouri (AP)

A device deployed by police goes off in the street during the clash with protesters in Ferguson, Missouri (AP)

A police officer points his gun towards a group of protesters (AP)

A police officer points his gun towards a group of protesters (AP)

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Police advance to clear people Monday, Aug. 18, 2014, during a protest for Michael Brown, who was killed by a police officer Aug. 9 in Ferguson, Mo. Brown's shooting has sparked more than a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

A night suddenly flared up once again into anger, chaos and confrontation on the streets of Ferguson, Missouri, as police fired tear gas and stun grenades into the air sending protesters fleeing for cover and gasping for breath.

Now in its second week, the protests triggered by the shooting of an unarmed black teenager by a police officer, Darren Wilson, show no sign of abating even after attempts by officials to use multiple tactics to stop the violence.

While Governor Jay Nixon had ordered in the National Guard on Monday he had also lifted a nighttime curfew in hopes of easing tensions.

Captain Ron Johnson, the State Trooper appointed by Governor Nixon to restore order to the community, spent the first part of the evening walking along the stretch of West Florissant Avenue, the strip that has been the main flashpoint of the nightly eruptions, talking with protesters about his hopes that the worst might be over. “In my gut, in my soul, I feel that tonight is going to be better,” he commented.

By the end of the night Capt Johnson said that two people had been shot, 31 protesters arrested and that police had come under 'heavy gunfire" during the course of the night.

"These criminal acts came from a tiny minority of law-breakers," he said. "It is criminals who throw Molotov cocktails, fire shots and endanger lives. These are not acts of protesters but acts of violence."

"Not a single bullet was fired by officers despite coming under heavy attack. Our officers came under heavy gunfire," he added.

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Earlier, the atmosphere was edgy as a line of police officers in gas masks and riot gear had formed a line at one end of the protest area. Soon, a second phalanx of police, now backed up by armoured vehicles topped with machine gun nests had also gathered at the other end of the street. Sound cannons released ear-piercing tones to discourage assembly. Sandwiched in between were hundreds and demonstrators and journalists.

While some degree of calm appeared to be holding at one end with the help of several community organisers and church pastors mixing with the crowds and urging restraint, at the other end, just off the street where the teenager, Michael Brown, was killed last Saturday, a far angrier knot of demonstrators had gathered, taunting police, ripping out a street and ignoring orders to disperse.

With a far smaller group of reporters at the same junction as witnesses, the stand-off abruptly dissolved into fresh chaos.  First some of the protesters scattered, as if spooked by something, which later was said to have been gunfire. Moments later, the police began firing tear gas, while protesters began hurling objects back, ranging from water bottles to at least one Molotov cocktail.

The gas in the area spread fast, sparing only the few wearing gas masks.

Later a police officer ordered a CNN broadcast crew - and soon all other remaining reporters - to clear what had been a media ‘safe’ area outside the McDonald's. “There has been a gunshot victim, please leave,” one officer shouted. Meanwhile, riot police weaved through the air pointing automatic weapons indiscriminately at protesters and reporters.

Seemingly not involved directly in the street confrontations were the National Guard troops, who held back mostly to protect the police command centre in a nearby shopping centre.

Earlier, President Barack Obama had said during a White House press conference that he had urged Governor Nixon strictly to limit the involvement of the National Guard to avoid further inflaming community resentment.

President Obama, who said he had directed the Attorney General, Eric Holder, to visit Ferguson personally on Wednesday, urged all sides to work for calm. “While I understand the passions and the anger that arise over the death of Michael Brown, giving in to that anger by looting or carrying guns, and even attacking the police, only serves to raise tensions and stir chaos,” he said.  “It undermines, rather than advancing, justice.”

The fresh protests followed the release by lawyers for Mr Brown’s family of the preliminary results of a privately conducted autopsy of the victim suggesting he had been shot six times.

The trajectory of one bullet, from the top of the head and out one eye, was seen by some to corroborate claims that the young man had been trying to surrender when hit by the fatal shot.  A wound to an arm may also fit with his having had his arms raised at the time, though the private pathologists said they could not say for certain.  Two more autopsies are pending from St Louis and also federal authorities.

The family meanwhile called for the arrest of the officer responsible for the shooting, who has been identified as 26-year-old Darren Wilson. The same call was echoed by many of those participating in the protests on Monday night.


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