Bhagat Singh, Indian socialist revolutionary (disputed with 28 September) (died 1931)

Bhagat Singh was an Indian anti-colonial revolutionary who participated in the mistaken murder of a junior British police officer in December 1928 in what was intended to be retaliation for the death of an Indian nationalist. He later took part in a largely symbolic bombing of the Central Legislative Assembly in Delhi and a hunger strike in jail, which—on the back of sympathetic coverage in Indian-owned newspapers—turned him into a household name in the Punjab region, and, after his execution at age 23, a martyr and folk hero in Northern India. Borrowing ideas from Bolshevism and anarchism, the charismatic Bhagat Singh electrified a growing militancy in India in the 1930s and prompted urgent introspection within the Indian National Congress's nonviolent, but eventually successful, campaign for India's independence.

A revolutionary is a person who either participates in, or advocates for, a revolution. The term revolutionary can also be used as an adjective to describe something producing a major and sudden impact on society.

September 27 is the 270th day of the year in the Gregorian calendar; 95 days remain until the end of the year.