Debbie Allen — American Actress born on January 16, 1950,

Deborrah Kaye “Debbie” Allen is an American actress, dancer, choreographer, television director, television producer, and a member of the President's Committee on the Arts and Humanities. She is perhaps best known for her work on the 1982 musical-drama television series Fame, where she portrayed dance teacher Lydia Grant, and served as the series' principal choreographer. She plays Catherine Avery on Grey's Anatomy. She is the younger sister of actress/director/singer Phylicia Rashad... (wikipedia)

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.
But out of limitations comes creativity.
Time management is a big part of the director's job.
Michael Ralph brilliantly plays the street prophet, a West Indian who foreshadows the Harlem riot.
I'm always moving forward.