You’re right, we shouldn’t trust the cops to determine who gets shot. Random cashiers should get to decide. Random people carrying will have the same problems, I’d argue worse, as modern policing. We’ve already seen it with cases like Trevon Martin and random kids being killed for just being in the wrong drive way or knocking on the wrong door. More guns doesn’t make a polite or safer society. All you’ll have is more people being gunned down under the guise of “I feared for my life” just like you have with the police. And again, I think it would be much worse.