I don't think I said that members of other religions didn't do the same thing. But at the moment, we're not discussing Muslim (or any other religion's) zealots. We're talking about a man who claims to be a Christian and whose comments are based on the Bible.
OK. Two definitions of Christian
Christian = person who believes in the divinity of Jesus Christ, belongs to a Christian Church, reads the New Testament, celebrates Christmas and Easter, etc.
Christian = person who believes in the divinity of Jesus Christ and follows a group of ethical beliefs that are associated with his teachings, e.g. "love they neighbor", "do unto others as you would have them do unto you", etc.
Lots of words have more than one meaning. I don't see a problem here.