YouTube caption:
National Guard Troops on the streets of Chicago in 1966. This deployment was in response to a series of riots that broke out after a man was arrested on July 12th, 1966 for re-opening a fire hydrant that police had closed after residents opened it during a heat wave. There was sporadic violence and looting until the National Guard was called in on the 15th. They stayed on patrol until the 20th.
