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'm predicting that we'll finally have a computer will search my e-mail automatically and delete every message that begins with 'thought you'd be interested,' and then give an electrical shock to the sender to remind him or her to stop send that kind of message.”
“A young and vital child knows no limit to his own will, and it is the only reality to him. It is not that he wants at the outset to fight other wills, but that they simply do not exist for him. Like the artist, he goes forth to the work of creation, gloriously alone.”