answer:Why the fuck would anyone want to irritate people willing to blow themselves and you up? Also, just because you have hurt, anger or displeasure because of their existence there is no need to ridicule someones religion. Even if it is heavily flawed, it will only serve to reinforce the bond between their own members and make them defensive, or worse – offensive. The only appropriate way to ‘fight back’ is to decline the invitation for pettiness. And another point, this isn’t just offensive to extremists.