I fully believe it will help minimize most school shootings, but I don’t think it would deter the more meticulous disturbed shooters like Columbine or perhaps e

I fully believe it will help minimize most school shootings, but I don’t think it would deter the more meticulous disturbed shooters like Columbine or perhaps even this most recent Texas shooter. If you are planning it out in detail, figuring out how to print a gun or buy one on the black market probably isn’t much of a deterrent. I would “only” expect gun control regulation to deter impulsive killings (including a lot of suicide). But it won’t deter criminals who are savvy to the black market, and it’s plausible that they might be more emboldened to victimize more people from the “civilian” population (as opposed to police or rival criminals) if they have more assurance that they’re unarmed. That effect is probably exacerbated in an era of de-policing (if criminals can rely on a hamstrung police force and a disarmed civilian population, they’re probably going to be even bolder).