Chief Minister of West Bengal from 1977 to 2000, and a member of the Communist Party of India. He was a member of the Politburo from the time of it's founding in 1964.
He was drawn to Communism after reading the works of Communist philosopher, Rajani Palme Dutt.
He became the longest-serving Chief Minister of any state of India.
His father, Nishikanta Basu, was a doctor.
Prime Minister Manmohan Singh led the nation in mourning his death in 2010.