As you are almost certainly aware, the majority of racial problems in the US boil down to the very simple fact that black people are on average of low socio-economic standing; and if there is one thing the US system is geared against its any person of low socioeconomic standing.
Put succinctly:
You might consider that its ok to pay differently based on if you’re in Los Angeles or Bryan, Ohio- but would you feel the same if pay was different depending on if you lived in Inglewood vs Santa Monica?