This video scares the snot out of me, because I have classrooms full of students who will be behaving exactly like that out on the streets as adults (if not sooner) if they don't get their heads out of their butts and start learning, improving and maturing. Yelling nonsense, cussing pointlessly, responding to situations on pure emotion with no logic.
Then there is the crowd, just watching, laughing, filming. Not that I would want to jump in and intervene, but to just watch like this is normal is not healthy, for the individuals, the community and society in general.