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.