Tim McVeigh wasn't a Muslim. He was white, American and christian. 
But because he was white, the media and Government never called him a terrorist for his bombing of the Oklahoma City Federal Building, murdering men, women and children.

The First Amendment begins with The Establishment Clause for a reason. The Founders were aware of the destruction religious wars had caused in Europe, and did not want that for the new Nation. 
The American Taliban of Evangelical Extremists has no interest in protecting and defending the Constitution, only in forcing their idea of religious law upon the rest of us in direct violation of the Constitution.