The 1984 Anti-Sikh Riots was a four-day period during which Sikhs were massacred by members of the secular-centrist Congress Party of India ; some estimates state that more than 2,000 were killed . Other incidents include the 1987 Hashimpura massacre during communal riots in Meerut , 1992 Bombay riots . The killing was done at the behest of Congress leaders such as Jagdish Tytler . Congress Party officials provided assailants with voter lists , school registration forms , and ration lists . Nanavati Commission also found out that several Congress leaders were behind this lynching . Former prime minister Manmohan Singh apologized in the Loksabha for the involvement of Congress stalwarts in the Lok Sabha . According to the 2011 WikiLeaks cable leaks , the United States was convinced of Indian National Congress complicity in the riots and called it " opportunism " and " hatred " by the Congress government of Sikhs
Hashimpura massacre
Hashimpura massacre
Human rights in India