Nephew of Ajit Singh; educated at National College Lahore; founded the Naujawan Bharat Sabha before joining the HRA/HSRA; proposed and won the renaming to Hindustan Socialist Republican Association in 1928; shot John Saunders, mistaken for Superintendent Scott, to avenge Lala Lajpat Rai's death; threw non-lethal bombs into the Central Legislative Assembly on 8 April 1929 and courted arrest; grew increasingly Marxist in his final years.
Contribution
Most prominent HSRA figure; his trial and execution became a nationwide rallying point and a viral photographic image.
After the movement
Executed alongside Sukhdev and Rajguru.