Protest marks shooting anniversary
Thousands of demonstrators have marched through the streets of Athens to mark the sixth anniversary of the fatal police shooting of an unarmed teenager.
During the march, shop fronts and bus stations were damaged, while clothes looted from a shop were set ablaze.
Clashes also broke out between demonstrators and police in the northern city of Thessaloniki.
No-one has been hurt, according to early reports.
In Athens, police said about 5,000 people are marching to commemorate the killing of 15-year-old Alexandros Grigoropoulos on December 6 2008 in the Greek capital.
The march passed the Greek parliament, and is now heading to the spot where Mr Grigoropoulos was killed.
At one point during the march, people broke into a Zara clothes shop in Athens, taking racks of clothes into the street and burning them.