Virginia Beach Shooting-When will America stop? Not that I'm saying this as a way to telegraph a position on gun availability (see the end of the post for my position on that), but it seems to me that it's a much broader, more complicated socio-cultural issue (or rather complex of issues) in the U.S.
What we need to figure out is why the people who are snapping are snapping and tackle those issues. My suspicion is that the core of it is often a combo of survival pressures and relative isolation or marginalization, when those are felt by someone who has the "right" combo of mental issues. As was the case here, many of these shootings have been precipitated by loss, and often, as in this case, a lost job.
In the U.S., there's not a feeling of a "social safety net." Especially as folks get older, they worry about how they're going to find another job--as there seems to be a lot of age discrimination (combined with wanting to hire younger employees because you can pay them less), and in conjunction with that, people worry about a loss of health care, an inability to keep paying rent/a mortgage/car payments, etc., and so on.
On top of this, a lot of people feel relatively isolated or marginalized, which is due to a number of both cultural and geophysical factors.
And because of the health care issues we have, a lot of people with mental problems do not get help (or even get diagnosed). You have to worry about insurance covering it, it's expensive otherwise, and of course there's a cultural stigma associated with it.
None of these sorts of things are easy to change.
So finally re gun availability, my stance is that we should try any and every approach, from a complete gun ban on one extreme to mandatorily arming and training everyone on the other extreme, and then any and everything in between--to see if any different approach would lessen gun violence, or in other words, my stance is "We should do whatever would work to lessen gun violence"--I don't actually care about what the gun laws would happen to be. I care about what, if anything, would work to decrease gun violence. We'd need to experiment to see what might work in our particular culture.
If the issue is primarily cultural instead of just hinging on the availability of guns, then probably no gun availability stance will have much effect. It's much easier to focus on guns than it is to focus on the more complex socio-cultural (and political) issues, such as fixing our health care system, our approach to employment, cultural norms that make it easy to be isolated or marginalized, etc. I do think that tackling the gun issue is worthwhile--because who knows, maybe it would have some effect, but my suspicion is that that's not going to really be the problem.