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.
“We didn't do anything wrong, but among the lessons learned, given the magnitude of the problems we now face in Afghanistan, a major U.S. force on the ground would convince the world we were in for the long-haul recovery of a country devastated by 21 years of warfare.”
“I never took hallucinogenic drugs because I never wanted my consciousness expanded one unnecessary iota.”