It's very sad to see so many reviewers say that this film is exaggerated, or "things like this happened 39 years ago" You are either a racist or completely clueless in life to believe that nonsense!
There is so much work to be done with peoples awareness its astonishing, hence why movies/plays like this are created in the hope that people will wake the hell up! The film rings very true to many black and ethnic minorities who have to live in a prejudice, racist and toxic society. Those who 'don’t get' this film do not want to accept the reality that it stirs up and like many, just choose to live in ignorance and not deal with it because they simply can and are not affected by it.
It's a good film that speaks to current ongoing affairs with good performances from all actors - It's not the best film, but certainly not one to be overlooked. Give it a watch