Originally Posted by
shuttlt
We don't know he wasn't allowed to carry it as a minor. I'm not sure the "good guy" and "bad guy" thing matters too much. If he had reasonable rear for his life, then self defence is on the cards. If Rosenbaum had been running at me, attempting to grab the gun and all the rest... under those circumstances, I would have been in fear for my life.
Was it reasonable for a 17 year old to decide to play vigilante superhero with an assault rifle? It's almost like you want to ignore the fact that it was his decision alone.