I'm Christian, and pretty strong about my convictions, but I don't agree with this display. No matter what religion you look into, there are normal people and there are extremists. Unfortunantly, most groups get judged by the extremists that exist on the fringe of their global beliefs. Does this guy have a right to do this? Yes. Is it going to aid in people siding with him? Highly unlikely. In the Bible, Jesus never promoted this type of behavior. It basically all boils down to...love God, love people. It's sad what people will do and pin "God's" name to it.
Two wrongs don't make a right, but three rights make a left.