I don't agree with critics when they say the movie takes too long to make a point.
I live in Durham and have had the privilege of meeting C.P. Ellis and Ann Atwater while they were alive, as well as some of the people who were involved in the process to bring the community together.
The movie, in a certain sense, lets the audience physically sense how long, tedious and hard it is to come to a consensus around tense racial issues. What happened in Durham, and still happens today when people care enough, is best described as a slogging along some difficult terrain.
The actors, all of them, did a superb job in depicting just what it was like at the time. Kudos to them and the director!