Your description was so terrible I could barely make out your argument. Let me hit you with some knowledge. It was Islam that caused 9/11, rather it was a certain group of Muslim's interpretation of Islam that lead them to performing these acts. Radical muslims are still muslims. They didn't use Islam as a "cover," they used it as justification, however misguided it may be. You are correct in not judging a group based on the actions of a few, however.