My father was career NYPD (83rd precinct), one of my younger brothers is a captain on the force and my best friend growing up is a lieutenant on the force (can't remember which precincts). I might know a little...
What I do know is the numbers of blacks and latinos of NYC alone exceeds half of the population of 8 million. Even if only .05% of those people resort to civil unrest you are still talking about well over the numbers of people in Fergusen. Things could get very bad very quickly