The riot isn't seen in the movie, but it is alluded to. He has this one speech that gives a great sense of texture and paints a picture of what was happening in Harlem then.
“I've seen novels that have grown out of one story in a collection. But it hasn't occurred to me to take any of those stories and build on them. They seem very finished for me, so I don't feel like going back and dredging them up.”
“It's commonly said that people who've been ill in childhood and who've had an upset education never really regret that they do. It means that you don't look at the world in the way that other people do, and if you were inclined to be a writer, that's a help.”