An unspoken issue here, is that USC is located in the ghetto.
Some other major universities are also located in the slums of their cities.
It seems that the feral ghetto “youth” are getting more violent, and going to places where they haven’t been before. This case is an example. There are also reports of flash mobs in nice neighborhoods of some cities, in which the feral “youth” come up out of the ghetto and go into places which aren’t their “turf”.
That wasn't always the case. Back when the football team was called the Methodists and our arch-rivals were Pomona College and Occidental College, students commuting to school by trolley would shoot rabbits in the fields surrounding the campus.
I understand that Temple University is also in such an area...my brother took one look at the area and said no way his daughter was going there...