This may shine a light on the contradiction of US gun control (or lack of) and the confused policies.
If the guy did this because he's a dick ... then that's OK (just wring hands, but do nothing).
If he did it because his god is a dick ... then that's not OK and we need to do something ... right?
Why the difference? Surely what is done matters more than the motivation for it? If he is a Muslim and did this because he is a Muslim then it's the worst thing ever but if he just happens to be a Muslim and it's just "some incident at work" then oh dear ... nothing to see here.
We can't predict either but the one thing we could do is not make access to powerful weapons quite so easy. And the amazing thing is that regardless of the motivations, this addresses the actual acts by removing the means.
But we're talking about a country that couldn't actually do anything after primary school kids are massacred. No doubt there will be more talk, more nonsense about how more guns would make things better and more of nothing being done.