Do you have personal experience with Muslims?
It's easy to be afraid of what one doesn't know. It's also easy to generalize people you don't have to deal with in person. I understand that many are afraid and angry because of 9/11 and other terrorist acts by extremist Muslims. But I think it's unfair and not helpful to paint them all with the same broad brush. And understandable fear doesn't make it any more sound or legitimate.