I understand that such comedy relies on the absurd, we have insisted in ilegitimize ISIS by calling them names, and making fun of them. But there is a point where you stop making fun of them and you start making fun of Islam, which is when it goes overbound. Charlie Hebdo attacks (while not right) where justified for Muslims because "Allah" was being mocked, not the actual people making the killings. There is a huge difference between loathing people and a "god", you can make fun of anyone but you can't make fun of a theological basis of a religion, "values" in the west is "Allah" in the muslim word, you can make fun of values but you can't insult them, because that would be insulting someone's believes.
Is like making fun of Einstein because no elementary particle was found to explain god, you can see the logical relation there, but you can also see that is based on an absurd, which is supposed to be funny. Real comedy relies on social commentary (
example), but be offensive for offensive's sake, that's illogical and irrational (and yeah, I see the irony on it, but again, we are talking about an idea since you changed the subject, not a person).