I agree that gun background checks could/should be better and more thorough. It's hardly anything to do with this guy though. Sure he chose guns as his primary way to kill and hurt people because it was the easiest and most effective way, but there are many ways a person can do that. He could have just as easily used a home made bomb or drove a truck into a large group. Something fueled this guys hate towards gay people enough to want to kill them, that is the problem. The extreme idea that they have to kill those with different views/ life choices than they have.