We merely have a supporter who dons a flag appropriated by ISIS in his Avatar.
It is more than that. This guy openly supports a group that destroys, murders and terrorizes. Would you like to live next door to that? Would you like to invest in something this supporter invests in? Would you build a school or anything else with these people? Would you like to be associated with any of that? I don't think so.
But that's the thing, I never heard him openly back the things you just said.
Currently he's merely guilty of posting an offensive picture.
If his goal was to troll people, he probably jizzed in his pants like crazy.
Edit: Who knows, maybe he has a problem with western civilization in general, which I can understand, and he has found the ISIS flag to be the most effective in offending us westerners?
Anyway.