I mean no offense, but the article says the victim told police the fight started when they poured water on the girls. I'm not saying the girls did or didn't deserve it, and I'm not condoning anyone's actions, but that sounds like a fight. Probably not a fair fight, but a fight.
But to be fair, the police also said the initial autopsy showed the fight and the death were "unrelated," which is suspicious at best, so who knows if we can trust what they say?