One of the (dubious) advantages of an awful crime like the Fort Hood shooting is that it does reveal reality. We'll be hearing lots about Major Hasan and his motivations in the days and weeks to come, but here's a clear indication of how Islamist groups like the Islamic Society of North America see the problem.
ISNA president Ingrid Mattson said: "I don't understand why the Muslim-American community has to take responsibility for him. The Army has had at least as much time and opportunity to form and shape this person as the Muslim community." (Thanks to Islamist Watch.)
As is usual for her, it's a red herring. Hasan spent years denouncing U.S. policy in violent terms and was trying to contact Al Qaeda; people are focusing on those specifics, not his membership in the Muslim-American community. Her true goal is to obscure those facts by using the bludgeon of political correctness - the same tool that let Hasan get as far as he did.