He was 17 - not sure what he was doing with a long gun.
Secondly - He was out during a curfew. Also put himself in the position to get into trouble.
That said, he was retreating. He was assaulted a couple of times even before he tripped in the middle of the street and assaulted by a couple of dudes.
The 17 year old will have a long road through the court system and will likely dole out $20K or more in defense.
Let’s hope a defense fund is formed. I’m sure it will oft contributed to.