 Complete the following phrase:  The 1984 Anti-Sikh Riots was a four-day period during which Sikhs were massacred in India. According to some estimates state that more than 2,000 were killed. Investigations by various committess appointed both by the government and independent civil societies have found complicity on the part of Indira Gandhis Congress party. Other incidents include the 1987 Hashimpura massacre during communal riots in Meerut, where it was alleged that 19 members of the Provincial Armed Constabulary shot 42 Muslim youths in cold blood, and dumped their bodies in a nearby irrigation canal, 1992 