Blame in on the MEA, NEA, and “I could care less about my spawn” Parent. No Fathers around, just jizz donors.
Add in the whole BLM attitude. "Acting white" will get a kid ostracized at best and usually beaten to a pulp in the inner city.
The one who do get some education move out and up, leaving the mess behind. A self-perpetuating mass of ignorance and crime.