Definitely self-defense. It's not like the victim seeked out the gang.
Hanyouman
Bullies like that tend to have a way of always being there when authority is not and vanishing as soon as the authorities appear, which tends to be right after the victim retaliates because of the lack of authority.
It's happened to me before. When I was in school. I would be bothered and pestered and bullied and nobody evr did anything about it. Then when I finally take things into my own hands is when somebody finally pays attention. But at that point they don't care what provoked my reaction, the reaction is all they care about.
Authority is overrated. If they really did their job right, then there would be no crimes or abuse like that in the first place.
Agree with you. It unfortunately happens and it's like if they weren't even looking out for your best interests.