It shouldn't.
I'm torn on the issue.
I think anyone should be free to be as stupid as they want. But, there's a line crossed when they advocate doing something to someone else because of that stupidity.
Talk politics, talk policy, talk about your dislikes, fine. It's such a fine line though that I really don't know where it lies, but at some point between 'our country should limit Muslim immigration', and 'Let's round up all the Muslims'.... it gets crossed.