(sees title and OP, peeks in assuming bad intentions)
(reads thread, nods head at same century-old racist crap)
Yep.
And hey, look, it's a remarkably uncharitable misreading of TNC! That's new for this forum in particular. I mean, it's old hat among commentators and the like, but I haven't seen it here before.
It's worth noting that much of TNC's work stresses the moral obligations of black people in particular - his first book focuses almost entirely on this, as does his writing on Kanye West's recent ignorant embrace of the president (how did West do this, while never having even heard of the muslim ban?). Also, his main objection to people who tell him to "stop writing about race" is that many people who say this (Thomas Sowell being a prominent example) spend a lot of time also writing about race, and what they really want is for him to abandon the community that made him what he is today - which he regards as a demand that he himself be wildly unethical.
I'm seeing more correlation with gender and age than I am with race. The assailants were not all black but they were all male, as far as I can tell. They were also all young.
Not saying girls/young women are incapable of this kind of behavior but it seems to be much more common among young men. As far as "teens." That is a strange term, somewhat along the lines of "youths." It's a kind of media shorthand for ... "we don't know their ages but they aren't children." The long version is "assailants who appeared to be in their late teens or early 20s." Not boys but not quite men either. It's an aggressive age, especially in males.
Teen males, in groups, with little else to do, often do cause trouble. Fun fact, quite a bit of backlash in the 70s to "cruising" is attributable to this as well.
I'll wait to see if this is any different than any other "My goodness, the negro youth are riled up again!". Such as "Wilding", "the Knockout Game", "Stop Snitching" (both due to the obvious witness intimidation, and the intentional blindness to the blue wall of silence), Trayvon Martin's supposed thugishness, the "rioters and looters" that people think "destroyed" Ferguson and Baltimore (they're both still around, and both were caused by mass police violence and intimidation).
Until there are actual, reliable numbers, I assume the same "black brute" stereotype is in play.