The police were pelted with coins and bottles to begin with, by the crowd, and later bricks and stones from a nearby building site. Barricading themselves inside the Stonewall Inn, police were forced to call for assistance. From there on as crowds swelled in numbers over several successive nights, the whole thing escalated into a full blown riot. It took three days and nights before the Tactical Patrol Force, trained to deal with Vietnam war protests, could finally subdue the rioters.
