DD, I'm talking off the cuff too but surely the shootings in question have little to do with religion, no more than a massacre at a school is to do with education. Isn't it about the psychopath who sees certain groups as so abhorrent to him or so valueless that he imagines he will feel better for killing some of them. It's about the accessibility of dangerous weapons by people with deranged minds.
The target for the rest of us must be to recognize those potentially vulnerable to such behaviour and have some social systems in place to help them. Easier said than done.
I can't help thinking how the JW org is all about being an outsider and fervently looking forward to "the death of the opposers" which is frankly in the same vein as these maniacs who do kill indiscriminately.