We are so cowed by political correctness, that no one will state the obvious. This was a group of black gang members. They are “ghetto” in their attitudes.
This is not the first time something like this has happened recently. And each time, it’s been young black men. It’s likely a youth gang activity. But no one will say so out loud, due to political correctness.
It is amazing, isn’t it? They were called: mob, thieves, a swarm, crowd — but not one use of the word “black”. Apparently, it matters not a bit that they are black.
Although I guess you could get a crowd of white people to do the same thing, most of the videos I see of these swarms stealing or more commonly attacking people or beating up people are black; the victims are sometimes black, but usually white.