He defended himself successfully against multiple attackers, with no collateral damage to bystanders. All the people he shot had criminal records and were in the process of trying to do him great bodily injury when they were shot.
Sorry, but that's badass by any sensible standard.
No state lines were crossed with a weapon in his possession, that's already been cleared up. As for what he can legally own, having it on your person isn't ownership. I don't know what the quotes around the word 'kid' are all about, but he's certainly no adult.
Based on what I've seen that kid do, I don't think he'll be so easily manipulated or pushed around...
On the other hand, society has two less criminal thugs and one wannabe killer to worry about. If Lefty ever holds another pistol again he'll know that there are no guarantees in terms of potential outcomes. I call that a win.
LEOs are taking enough flak these days without having their every decision second-guessed by armchair quarterbacks. Hindsight is 20-20 and anyone can "if only" a given situation to no end, but it's not productive or helpful, it's just more negativity to put out there.
I guess you didn't see the video footage, because 'non-violent' is the least accurate description you could give. I don't know in what world trying to attack someone with a skateboard is non-violent, or attacking someone with a Molotov cocktail, but it's not this world.
Spare me the drama, please. We're all adults here and it doesn't take a rocket scientist to understand what happened. Your "agree with my thinking or I take my ball and go home" is beneath you, or at least it should be. If not, shame on you and have a nice life.