What political group did Batukeshwar Dutt and Bhagat Singh belong to?
Batukeshwar Dutt:  He was also a member of the Hindustan Socialist Republican Association. Bhagat Singh: Bhagat Singh (] 1907  – 23 March 1931) was a charismatic Indian socialist revolutionary whose two acts of dramatic violence against the British in India and execution at age 23 made him a folk hero of the Indian independence movement.
Hindustan Socialist Republican Association