The social control of African Americans in the United States

How has the social control of African Americans in the United States changed or adapted over time? What impact do you think this historical experience has on modern race relations and, more specifically, the contemporary justice system? What were the one or two most meaningful things you learned from your viewing of this film?

Here is a link to the full feature film via YouTube: https://www.youtube.com/watch?v=krfcq5pF8u8&t=917s