"Je suis Charlie" (both "I am Charlie" and "I follow Charlie") is a statement used by supporters of free speech against the 7 January 2015 massacre in which 12 people were killed at the offices of the satirical newspaper Charlie Hebdo in Paris. The statement identifies the speaker with those who were killed at the Charlie Hebdo shooting, and by extension for freedom of speech and resistance to armed threats. Some journalists embraced the expression as a rallying cry for the freedom of self-expression.
( Quote from : http://en.wikipedia.org/wiki/Je_suis_Charlie )
Thousands of people demonstrated, with torches and candles, in Piazza Castello in Turin in defense of press freedom after the armed attack on the weekly Charlie Hebdo. Many have raised the signs 'Je suis Charlie', but also cartoon designs. The event was attended by the mayor of Turin Piero Fassino and the regional president, Sergio Chiamparino with the banner of the City.