Freedom of speech in French

The monstrous acts of terrorism occurred in Paris in November 2015 year. People were killed, and it is very sad and scary. Sorry for all the French!
But deep down still interest: when the magazine "Charlie Hebdo" draw caricatures of the attacks in their own country, as they did after the crash of the Russian A321? I waited a very long time, but for some reason, "Charlie" to grief, what has happened in his home country applies very differently than when killed citizens of another country.