I taught in the DC Public Schools for a year.
My school was Ballou HS in the heart of Anacostia; it was the hood. The class was called "Street Law" and it taught basic legal principles like what constitutes an enforceable agreement and how warranties work when you buy a car or a product. 100% of the students in my class were black (as an aside, a colleague also taught a class at Ballou, and she had one white kid in her class as Bolling Air Force Base was in Ballou's jurisdiction, and the white kid was in a family that was stationed at Bolling; the kid's name was Bob White; not hard to remember that name; felt like it was a Chappelle skit).
Criminal law was an part of the Street Law curriculum, and as part of that portion of the class, we attended a criminal trial in DC Superior Court. Our trial was a murder trial. The defendant was a 19 year-old from Anacostia that many of my students knew. He was feared, and he made their neighborhood unsafe. My kids were far more law and order proponents than the suburban white kids that I had grown up with, and it was not close; they or their families had been frequent victims of crime. They wanted a greater police presence, strict sentences for those that commit crimes and they wanted people that made their neighborhoods unsafe locked up. I am against the death penalty, and the majority of my kids not only wanted the defendant in the murder case locked up, they wanted him executed. If anything in that class, I was the "lib" advocating for relaxed sentencing and alternatives to prison, and my students were the law and order conservatives who cared far more for victims rights than reforming our police and prison system.
Admittedly, this experience preceded the current BLM movement and lots have feelings have changed, but those that try to make the "defunding the police" and all related criminal justice reform issues out to be an issue that the African-American community universally supports is not accurate based upon my experience.