I think a lot more people will die. — T Clark
You are correct. Unless and until members of a community learn to take personal responsibility for their own actions, and treat each other with dignity and respect, there would most definitely be a thinning of the herd. I just can't help but think how things would have been different if most of those adult cell phones had been ARs slung politely over the backs of all the onlookers Floyd's murder. No need to brandish because Chauvin wouldn't have been acting up.
In fact, we may not even have to arm up. Close your eyes and imagine this: Illinois and Chicago (I chose them instead of MN because of all the deaths there now) decide to issue state-of-the-art hand-held military shoulder weapons and side arms, along with unlimited ammunition to all men and women who don't have criminal records. Included with the package would be training (starting in early school) in the use thereof. Here are the expected responses from different communities:
White supremacists: "Wait, what?"
Fascists: "Wait, what?"
NRA: "Wait, what?"
Inner city gangbangers: "Wait, what?"
Criminals" "Wait, what?"
Law Enforcement: "Wait, what?"
So, now that everyone agrees we should wait, LOL, we could all pump the breaks and start revisiting those little things like personal responsibility, dignity, respect, and our own actions. If the threat were real, and we'd be training up and arming all the good, law-abiding citizens in the worst areas of Chicago (who, I believe, vastly outnumber everyone else), then there might be a reckoning.
If crime rates did not drop and the foregoing "Wait, what?" communities did not start to mind their Ps and Qs, then yes, we go forward with the program. And yes, there would be a period of blood. But in the end, because good people (currently unarmed) outnumber the bad (currently armed), I think things would settle out to the point where people would stop carrying because it can be inconvenient for some folks, especially when there is no longer a need. We may even end up with Bobby's twirling their night sticks as they whistled down the sidewalk.
I think Europe doesn't deal with these issues because they suffered through two World Wars in thirty years. That, and they don't have the history of independence we have here.
Anyway, I periodically find the truth to be counter-intuitive so I give it thought.
Edited to add: In my fantasy world, the education begins early and is cutting edge and includes a deep steeping in the Liberal Arts, reading, writing, languages, philosophy, logic, civics, history, political science, sociology, phycology, and etc. All, including the guns, voluntary, of course.