Well, let's come up with a list of non-Muslim domestic terrorist organizations or other terror groups acting in the US and think of possible reasons they would attack America...
Army Of God
Church of Jesus Christ Christian
Aryan Nations
Jewish Defense League
American Nazi Party
American Third Position
Hammerskins
Blood and Honor
Black Hebrew Israelites
Republican Party (yeah I'll include them)
Tea Party (them too, brandishing rifles, spitting, swastikas and threats are forms of violent intimidation)
National Socialist Movement
Elohim City
Creativity Movement
NAAWP
Kahane Chai
World Church of the Creator
Victory Outreach
Minutemen
Maricopa County Sheriff's Department
Church of Scientology
Westboro Baptist Church (they crossed that line when one of them started sending death threats to Kevin Smith's Daughter)
__________________ Land of the free, home of the brave...
Do you think we will ever be saved?
In this land of dreams find myself sober...
Wonder when will it'll all be over...
Living in a void when the void grows colder...
Wonder when it'll all be over?
Will you be laughing when it's over?
My point is it's all about affecting political and social change through violence or threat of violence due to political, philosophical or religious extremism. That's never been exclusive to Muslims and quite frankly, I think some crazy Nazi with a makeshift army and friends in the military stockpiling nerve gas and rocket launchers in Texas scares me a hell of a lot more than some cave fanatics in afghanistan trying to piece together a nuke with lodestone and chicken wire.
__________________ Land of the free, home of the brave...
Do you think we will ever be saved?
In this land of dreams find myself sober...
Wonder when will it'll all be over...
Living in a void when the void grows colder...
Wonder when it'll all be over?
Will you be laughing when it's over?