Which city?
I think it was San Francisco but that’s just a guess.
I first saw this at clashdaily.com while I was looking at another video of the mob fight at the school in Memphis.
Here’s the link for that one, in case you missed it.
http://clashdaily.com/2015/04/watch-feral-kids-take-over-memphis-school-teachers-school-cops-admin-lose-control-of-school/