Cities rally in show of fraternity for France
Landmarks in London were lit up with the colours of the Tricolore in a striking show of unity with France following the terror crisis.
The red, white and blue of the French flag illuminated the National Gallery and the fountain in Trafalgar Square.
The colours were also beamed onto Tower Bridge while the London Eye went dark to allow a similar spectacle at County Hall.
Hundreds gathered in Trafalgar square to honour the victims of the massacre and express defiance against the killers who visited terror and grief on Paris.
French flags were waved high, and a 'wreath' of pens was laid on the ground, a circle filled with flowers, placards reading "Je Suis Charlie" and a single Tricolore flag.
Deputy Prime Minister Nick Clegg was among the crowds, and said there was a "striking dignity" about people coming together spontaneously to "show their quiet disgust at what happened".
He said: "The attacks in Paris were not just an attack on our physical security but also on the values of freedom of expression which are so important to all European societies and something that we share on either side of the Channel."
In Berlin, about 18,000 people gathered in front of the French embassy next to Berlin's Brandenburg Gate in an impressive show of solidarity for the victims of the Paris attacks. Many brought flowers or pencils and help up signs saying "Je suis Charlie" or "Je suis Juif" (I am a Jew).
About 20,000 people marched silently through the centre of Brussels, and in Madrid, hundreds of Muslims carrying banners saying "Not in our name" rallied at Madrid's Atocha square, next to the train station where in March 2004 bombs on rush-hour trains killed 191 people in Europe's deadliest Islamic terror attack.
Other rallies took place in Moscow's Gorky Park, Istanbul, Beirut, Jerusalem, Ramallah in the West Bank, and Gaza City.