An ex-St. Louis cop, who now works for the NAACP’s Ethics Project, describes in a Washington Post op-ed what it was like to be a black cop in St. Louis. Be forewarned: He uses the term “racist” to describe his department’s culture and how he saw police treat people in his community; so he’s, um, got biases.
http://www.washingtonpost.com/posteverything/wp/2014/12/06/i-was-a-st-louis-cop-my-peers-were-racist-and-violent-and-theres-only-one-fix/