 It was Vancouver's first riot since 1972, when the Rolling Stones American Tour 1972 led to confrontations between the police and 2,000 outside the Pacific Coliseum.After the NHL game ended, an estimated 50,000 to 70,000 individuals converged upon Downtown Vancouver.The gathering developed into a riot at Robson and Thurlow Street, after an accident involving a man who fell from a lamp standard into the crowd below.