Following the January 7 terrorist attack on the French magazine Charlie Hebdo, more than 15,000 people gathered in central Paris to support freedom of expression. Holding placards which said 'Je Suis Charlie', cities around the world — from San Francisco to Hong Kong, joined to show solidarity with those killed in the massacre. London was no exception — crowds poured into Trafalgar Square with these powerful messages…
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A woman stands with the words 'I am Charlie' written on her face as she takes part in a vigil in Trafalgar Square, London on January 7.
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People gather in Trafalgar Square, holding posters to show solidarity with those killed in Paris.
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A man stands wrapped in a French flag as people hold up pens and posters during a Je Suis Charlie solidarity vigil in Trafalgar Square.
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Burning candles and flowers resting on top of a pile of pens and posters in Trafalgar Square.
Pens held in the air as people gather in Trafalgar Square to show respect for the twelve people killed in Paris.
Some at the Je Suis Charlie solidarity vigil in Trafalgar Square couldn't hold back the tears.
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Many came to Trafalgar Square to show solidarity on Wednesday evening.
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Je Suis Charlie, the words used by thousands around the world, expressing solidarity with those killed in Paris, are displayed on an iPhone in Trafalgar Square.
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Clouds gather over Trafalgar Square on January 8 as pens, flowers and placards from the vigil that took place the night before are left on the ground.
