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.
“It's one of the best leagues in Europe in football. Benfica in my opinion is one of the top 10 biggest clubs in the world.”
“If you think somebody cares about you and believes your life is worth saving, how can you give up?”