Tripura Rajaer Upajati Ganamukti Parishad (Bengali for 'Tripura State Tribal People's Liberation Council') is a left-wing movement working amongst the tribal peoples of Tripura, in north-eastern India.
During the 1940s the royal house of Tripura tried its best to maintain its political rule over the state. However, monarchy was challenged by movements that were influenced by the Indian National Congress and the Communist Party of India. These associations proposed democratic reforms, but were met with stern resistance from the royal house. In 1946 members of Janamangal Samiti (People’s Welfare Association), Janasiksha Samiti (People’s Educational Association), the local cell of the Communist Party and individual left-wingers got together to form the Tripura Rajya Prajamandal (Tripura State Popular Assembly). Prajamandal proposed a form of constitutional monarchy for the state.
The Prajamandal included both communists and non-communists. In 1948 a ban on the organisation was proposed, on the ground that the organisation was under the influence of communists in East Pakistan. This spurred the non-communist leaders of Prajamandal to try to expel the communists. However, the ban was enforced before the expulsion had taken place. Leaders of Prajamandal were arrested, and many cadres went into hiding. By not differentiating between communists and non-communists in repressing Prajamandal, the royal government indirectly contributed to increasing the support for the communist within the organisation. On Independence Day Prajamandal took out a militant manifestation in Agartala. Simultaneously, the movement started activating itself in the struggle for tribal land rights. Following the Partition of India, a major wave of Bengali Hindus migrated to Tripura from East Pakistan. On the Tripura countryside Bengali money-lenders started to take over agricultural land from indebted tribals. Prajamandal organised resistance, a struggle that radicalized the movement.