The Dravida Kazagham, under Periyar's leadership, had called for the killing of Brahmins and the destruction of their residential properties on November 3, 1957.
Amritpal Singh in his four-page letter made an appeal to the Sikh community to bestow the status of "Quomi Shaheed" (community martyrs) upon dreaded Khalistani terrorists Avtar Khanda and Hardeep Singh Nijjar
The signatories included ex-CAG Rajiv Mehrishi, ex-Home Secretary L C Goyal, former RAW chief Sanjeev Tripathi, Justice (retired) S N Dhingra and Justice (retired) Lok Pal Singh.