There's different kinds of christians, there are the nice people that always stay your friend no matter what, those are the great ones, then there's the balls-ass insane nutjobs like the guy mentioned and fuckers like fred phelps.
It's also somewhat true that quite a bit of the time christians are some of the most power-hungry people around, everything has to be about THEIR god and ONLY THEIR god, people like that are one of the reasons the world is getting in a pretty shitty shape for anyone who's not some morally upstanding white christian man.