Lal Sena
Lal Sena was an organised armed militia of CPIML Liberation in northeastern India, across the terrains of central Bihar, north-west of today's Jharkhand, and a few districts of eastern Uttar Pradesh. It was formed mainly by lower caste peasantry and landless labourers. It was active from 1974 - 1990
Background
In 1960s, when the Naxalite movement started under the leadership of Communist Party of India (Marxist–Leninist), the poor peasantry and agricultural labourers who belonged mainly to the lower castes started taking side with the communists in central Bihar across the districts of Bhojpur, Gaya, Nalanda, Patna and Aurangabad. Several violent armed clashes occurred between the landlords and poor/landless peasantry. During the 1970s, CPI faced hard offence from central and state governments throughout India and splintered into several ML factions. In 1974, one of the ML factions was able to hold on to the grounds and reorganised itself into the CPI(ML) Liberation political party.Meanwhile, the landlords/landowners most of whom economically were from upper class peasantry organised themselves based on caste lines into several landlord gentries. In retaliation Lal Sena guerrilla armed squads, were organised by then underground CPI Liberation.