Possible scenario:-
They murder for that cartoon - so all journalists lower the bar, and only publish milder cartoons.
After a while those milder cartoons too become the worst slight that the extremists see, so they murder for those too. The bar is lowered further, and only the most gentle, sweet comments are made. Love is all.
After a while the extremists become accustomed to seeing only approval. They thrive and become the majority.
Then someone mildly criticises some aspect of their beliefs. He is arrested by those responsible for "defending the truth against attack" and put to death.
In the past, one sect of Christians has had the monopoly of doctrine, and put to death for heresy those who put forward other versions. The heretics were expected to go straight to Hell as well. History is full of examples.
Death is no longer the punishment for heresy, but "Well into the 20th century, Catholics defined Protestants as heretics. Thus, Hilaire Belloc, in his time one of the most conspicuous speakers for Catholicism in Britain, was outspoken about the "Protestant heresy"." http://en.wikipedia.org/wiki/Heresy_in_Christianity