Something is definitely f'ed up with our society
When I was a kid I had a lot of access to firearms. And like everyone else I had good and bad days, good mates and bullies. But if problems needed solving ... at most we would use our fists. Maybe a knife but that's more for show and intimidation t. I grew up in an absolute hell hole of a rust belt town. But at some level we still respected life. It literally never would have occurred to me to use a lethal weapon... Nor did it seem to occur to very many other people.
I do believe that video games desensitize people to killing. Why? Because I see many parallels in the dehumanization of enemies in the games to what I've experienced in military training. Taking human life is an inherently unnatural act. To make men (or boys apparently) go over that line you've got to objectify the enemy and normalize violence. I grew up blasting aliens. That's ok because they are not human... Then we get zombies. Human, but that's ok because they are possessed. Now we no longer pretend in games at all, we "whack" humans at 100+ frames per second. That's ok?
Well, maybe not. There is a slippery slope here. Looking back at basic training.. similar. Hell, the US Army is using a first person shooter game as a recruiting tool!
At this point I'd say gun control has got to be part of how the problem is addressed. I don't need a high capacity mag semiautomatic rifle for hunting or sport. If I can't get a varmit on a single shot, my marksmanship needs some work. Lacking highly lethal small arms will not make one's murderous impulses go away but maybe we can reduce the carnage.
Yes, addressing violence in media and games... Addressing insane gun laws... Neither is a complete solution. Something is very wrong in society. But you've got to start somewhere.
My one fear of gun control is the fact that our police are armed to the teeth and not particularly trustworthy. That may be a problem.