Dan Scott said:
Something to consider, 9/11 happened 23 years old. No doubt some of the Muslim kids were picked on or had their feelings hurt with some of the rhetoric. Those kids are now in 30s. If they are unmarried or not doing well financially, they probably blame it on the American culture against them and react.
I worked with someone like this about a decade ago. He was a devout Muslim born and raised in Chicago, and he told with me once that he was bullied in school after 9/11 for being Muslim. He was also outspoken at work about his contempt for the US government and Israel. Other coworkers were uncomfortable, needless to say.
One day he was gone and I never heard from him again.