Sukhdev took part in a number of revolutionary events, including a prison hunger strike in 1929. He is widely known for his assaults in the Lahore Conspiracy Case (1929–1930). He is well known for his role in the assassination of Assistant Superintendent of Police J. P. Saunders on 17 December 1928, by Bhagat Singh and Shivaram Rajguru, the assassination carried out in retaliation for the senior leader Lala Lajpat Rai's horrific death.
