You don't have the right to 'take someone down" because they are lawfully carrying a weapon. It remains to be seen if he was carrying that weapon lawfully.
I understand, but that might be splitting hairs awfully finely. If trouble breaks out and you see someone with a gun, you can see how it might be tempting to neutralize them. If he has a right to protect himself, then so do others.
He was there to help protect a business that had been partially burned the night before, along with others. He was also attending to injured people. Should he have had a gun? I would not have done it.
Was he in the place of business when the shootings happened? I don't know the details.
Besides, the way to protect a business is to buy insurance. You don't send a 17 year old with a gun. This is the real world, not a wild west dime novel.
But had the "mostly peaceful protestors" refrained from the destruction they had caused none of this would have happened.
Well sure, but if the cops hadn't shot ..... And if there had never been slavery....
I mean, that argument is never ending, isn't it? There's no smoke without fire. If a group repeatedly rises in anger, it simply can't be that there's no reason for it. People don't engage in violence for the hell of it. Of course some do exactly that, but not large numbers of ordinarily law-abiding people, life doesn't work like that.