Well, this took place in Richmond, it's pretty much the worst place to live in the Bay Area. I just read another article on this written today that talked about people walking around advertising it:
"I was on Emeric (Avenue) with some friends when some dudes walked up and were like, "There"s a drunk girl back there,— said Raul Rubio, who brought the news back to his girlfriend. "They said she was naked, and if you want to get f...ed, go back there."
Richmond High gang rape, lack of action from onlookers outrages community - San Jose Mercury News
I wouldn't call it the bystander effect, I'd call it a bunch of niggers and spics with no parental guidance cause their parents are probably on drugs or in jail or dead. Welcome to the ghetto.