Nothing justifies curtailing the freedom of expression, press freedom, nor the killing of journalists. Nothing justifies the slaughtering of the Charlie Hebdo cartoonists and journalists.
But there is something to be said about tolerance and acceptance of other cultures.
If I look through some of the previous Charlie Hebdo cartoons (and I purposely did not publish any here, but look here and here), I hesitate between freedom of expression and the right to insult purposely.
We have the right to a freedom of expression, but I think nothing justifies intentionally insulting other cultures nor religions.
That is my take on it.
Cartoon courtesy David Pope