The CPI (ML) was formed by the radicals within the
Communist Party of India (Marxist) (CPM) who grew concerned by the increasingly parliamentary character of its politics. A debate ensued where the radicals accused the CPM leadership of turning towards
revisionism. Finally, the party purged the radicals, who went to form the CPI (ML). The CPI (ML) advocated armed revolution and denounced participation in the electoral process. Its leaders were
Charu Majumdar and
Saroj Dutta, both of whom had belonged to the
left-wing within the CPM in northern
West Bengal. Sanyal, Jongol Santhal and his followers had mobilised a revolutionary peasants movement in
Naxalbari, which evolved into an armed uprising of the mostly
Santhal tribal inhabitants. CPI (ML) saw Naxalbari as the spark that would start a new Indian revolution, and the movement came to be known as "
naxalites". In several parts of India, for example
Uttar Pradesh,
Bihar, other parts of West Bengal, and in
Srikakulam in northern
Andhra Pradesh, the CPI (ML) organised guerrilla units. The party got moral support from
China, which actively encouraged the attempts of CPI (ML) to launch revolution. According to
Pradip Basu in his book
Towards Naxalbari (1953-1967): An Account of Inner-Party Ideological Struggle: "There were two nuclei of radicals in the party organisation in West Bengal. One 'theorist' section around Parimal Das Gupta in Calcutta, which wanted to persuade the party leadership to correct revisionist mistakes through inner-party debate, and one 'actionist' section led by Charu Majumdar and Kanu Sanyal in North Bengal. The 'actionists' were impatient, and strived to organize armed uprisings. According to Basu, due to the prevailing political climate of youth and student rebellion it was the 'actionists' which came to dominate the new
Maoist movement in India, instead of the more theoretically advanced sections."
Naxalbari uprising It occurred in Naxalbari of
Siliguri subdivision, Darjeeling district under the leadership of communist leaders like
Charu Majumdar and others who later became the part of CPI (ML).
Srikakulam peasant uprising In the
Srikakulam district of Andhra Pradesh, communist leaders aligned themselves with the then formed AICCCR and launched peasant upsurge in Srikakulam which continued for almost 5 years in late 1960s and early 1970s. ==After 1970==