Indian socialist who was one of the most influential revolutionaries of the Indian independence movement.
He founded the Indian nationalist youth organisation Naujawan Bharat Sabha in 1926.
He gained widespread national support when he underwent a 116 day fast in jail, but he was ultimately hanged for his involvement in the murder of a British police officer.
He was raised in a Sikh family that had been involved in revolutionary activities against the British Raj in the past.
He disagreed with Mahatma Gandhi's philosophy of non-violence and preferred to use violence to express his anger with the British Empire.