I saw a video of a guy being chased and falling, he had an AR 15 (I think), or whatever you call it. He shot one person when on the ground, someone tried to take his weapon, he shot in the air when he got up. He had apparently killed at least one person and one had been shot when attacking him (not sure if he died or not).
The question has been about self defense. The people chasing him apparently did so because he shot someone who was breaking into a car and, he was apparently a citizen militia defending a gas station from attacks.
That's what I can glean from this story from quick reading online, anyone can correct me if I'm wrong.
What is startling to me though, is that this guy is 17. Can he own a guy like that and carry it at that age? If you ask me, no way someone that age should be in that position to begin with. Even a 19 year old hardly has his head working properly, nor even fully formed (I learned that from Hannity of all places). Having a juvenile run around with that weapon is asinine.