From its beginnings, the American colonies and the U.S. has been a racist state. One need look no further than slavery and its institutionalization in the Constitution. The police are, generally speaking, a means of enforcing racist policies and the repercussions of such.
https://www.nytimes.com/2017/08/14/upshot/killings-of-blacks-by-whites-are-far-more-likely-to-be-ruled-justifiable.html

Criminal police actions against citizens, particularly people of color, go unpunished. Even worse, they are involved in protecting the drug trade, as we have detailed on this website. The only people that the police “serve and protect” are the .000001%, that is, the Anglo-Euro-American banking cartel and its corporations, which have hijacked the U.S.A. Corporate control over the state is one of the textbook definitions of fascism. https://www.counterpunch.org/2017/08/09/anything-goes-when-youre-a-cop-in-america/