Lets get real, lets get really really real. I was in 11th grade at Chardon Highschool in 2012. I was in the cafeteria when TJ Lane opened fired and killed three people. Can any of you justify why that sick fuck had any access to guns whatsoever? I thought you people were against private property? What the hell do you have to say to that then? Cops shouldn't have guns, citizens shouldn't have guns, workers shouldn't have guns, capitalists shouldn't have guns. NOBODY SHOULD HAVE ANY FUCKING GUNS! Just because Marx wrote one line about not disarming the workers you all parrot it like christians do the bible. If your reading this and you own a gun fuck you, throw it out, dispose of it properly. You have no right to take someone's life and are a coward for owning it. Seriously fuck you.
I'm kind of conflicted on this issue. One one hand, any reasonable society ought to have at some restrictions and regulations, like background checks for sure. It looks like in your case, the guy got the gun from his Uncle. I don't know what could have helped in that situation gun-control wise outside of some kind of mass-disarmament and banning of selling guns.
On the other hand, I don't think you can practically be in favor of any sort of revolutionary politics if you are in favor of the working class being disarmed. Maybe that's not a contradiction, maybe it is, idk.