A girl holds up a placard that reads "I am Charlie" in several languages at the Place de la Nation in Paris Sunday, Jan. 11, 2015. More than 40 world leaders, their arms linked, marched through Paris Sunday to rally for unity and freedom of expression and to honor 17 victims of three days of terrorist attacks.

Charlie Hebdo publishing prophet cartoon on new cover

Charlie Hebdo’s past caricatures of the Muslim prophet appear to have prompted last week’s attacks, part of the worst terrorist rampage in F…