We have similar thoughts but different nomenclature
My “Black urban subculture” is pretty much the same as your “Black Underclass”
My thinking is heavily influenced by watching, studying in fact, the TV series called “ The Wire”. It is set in Baltimore and the characters depict the various subcultures of black Baltimore residents ranging from a black mayor and police commissioner through various police ranks, union members and officers, drug dealer leaders , street corner dealers and various old ladies in church hats caught up in the maelstrom.
Sometimes the lines are blurred as a drug dealer ages and gets to the top of the heap or as an old street soldier gets out of prison and realizes the old drug street life is now a bad choice of life style.
The very program series is all about race and racial problems and issues. Compared to the galactic racial proportions of
The Wire where the word nigger is a constant form of address, Clive Bundy’s statement is merely asteroid size
The powers that be dare not condemn or even mention The Wire because the series is so near the mark it is embarrassingly bad for them.
I've read a number of books about blacks growing up in the big cities like "Manchild In The Promised Land" that were written fifty years ago or more. The same stuff that is going on now was going on back then. I don't want to go back to the days of segregation, but if the powers that be don't start dealing with this cancerous segment of the American population, some very bad reactions might happen. I don't think law-abiding Americans want to keep putting up with this craziness much longer.