I agree with Arc Angel (Who BTW, currently graces the #1 spot on my List of Insane Individuals) on these points:
1. Bob Costas is an idiot.
2. Guns or any other weapons aren't to blame for violence.
After that....Well, he goes off on an insane tirade about forcing everyone to conform to his religion, which makes a lot of folks wanna do some violence.
Generally I get along fine with the few Christians I know. Most already know they don't wanna discuss religion or politics with me, and the few who are too slow to know, really don't like me much anymore.