I think the popular "knockout game" showed this is now purely about race; class or wealth no longer matter.
Wow, reading your post just now brought back a memory I hadn’t thought about in decades.
1975, just married, on a cross country bus trip so my family could meet my bride.
At one point a rather large black dude’s voice got louder and louder from the front of the bus. He was cursing and demeaning someone in the seat next to him, hurling racial epithets and threats on this poor very old white guy next to him because apparently this gent’s arm touched his. He just keep going on and on about it, way out of proportion to the crime. It was a humiliating moment.
No one including the bus driver sought to intervene. Everyone in that bus was afraid to, including me. That guy had a lot of pent up hostility towards whites that he let loose on this poor guy.
Knock out game wasn’t invented yet, I guess.