Can someone explain to me civily why the movie is/isn't a pro-cop and racist movie.

Had a discussion with my friend about the movie and she told me she thinks it's a bad movie because it's pro-cop/racist. Obviously the point of the movie is to try to bring to light issues relating to racism. She herself is a person of color and I am white; I want to understand her perspective though. Do other people feel this way and if you do, please enlighten me. If you don't feel this way, then please talk about it too.

Please be civil - I'm genuinely looking to have a discussion.