Bhimrao Ramji Ambedkar (14 April 1891 — 6 December 1956), also known as Babasaheb, was an Indian jurist, political leader, Buddhist activist, philosopher, thinker, anthropologist, historian, orator, prolific writer, economist, scholar, editor, revolutionary and a revivalist for Buddhism in India. He was also the chief architect of the Indian Constitution.
Born into a poor Mahar (then considered an Untouchable caste) family, Ambedkar spent his whole life fighting against social discrimination, the system of Chaturvarna — the categorization of Hindu society into four varnas — and the Hindu caste system. He is also credited with providing a spark for the conversion of hundreds of thousands of untouchables to Theravada Buddhism. Ambedkar has been honoured with the Bharat Ratna, India’s highest civilian award.