Janwadi Kisan Sangram Samiti (Democratic Peasants Struggle Association) was formed after local communist leader A.K. Roy had been expelled from Communist Party of India (CPI(M)). JKSS later converted into MCC. MCC is still led by A.K. Roy, who has been elected MP three times.
A.K. Roy was active in the Jharkhand movement, and co-founder of Jharkhand Mukti Morcha. As JMM developed into a political party, the relations soared.
In 1980 A.K. Roy (then MP) and K.S. Chatterjee (Member of Bihar Legislative Assembly) were arrested under the National Security Act. In total Roy has been jailed four times.
In 1998 the only Member of the Legislative Assembly of Bihar of MCC, Gurudas Chatterjee was murdered by the coal mafia. Chatterjee's son Arup Chatterjee took over his mandate after a by-poll.