Moni Singh was the mentor of the Tanka and Tebhaga Movement. The spark of the peasant movement forced the government to concede to the demand and abolish the Tanka system.
He did not confine himself only to the peasant movement but also inspired others to set up educational institutions, health facilities and small industries in this region. He motivated his party men to devote themselves to this end. He used to say that without collective development of life one could not have a developed society. Patriotism means assurance of food, clothing, dwelling, health, education and freedom of speech for all.
It was written by some historian that the young trade union leader was very popular among the textile workers of Metiaburuz, Kolkata and this was due to his honesty and devotion to the cause of the working class. By his brilliant understanding over labor movement young trade unionist, Moni Singh even compelled Netaji Subhas Chandra Bose to fulfill the demands of textile workers.
This made him more popular among textile workers. By this time the overwhelming wave of the Russian Socialist revolution reached in oppressed India and young Moni Singh was strongly influenced by the thoughts of that revolution and later in 1925 he met with renowned revolutionary Gopen Chakravarty.
After discussion with that revolutionary leader, he took Marxism-Leninism as his political ideology. Obtaining a membership of Communist Party was very difficult at that time. Party membership was given after heavy screening to ensure the security of the party.
Being an outstanding leader of oppressed people Moni Singh never stopped, during his captive-time in Susang Durgapur he again started mobilizing peasants and Khetmajur(agricultural workers) to protect their rights. This time his maternal uncles, who were the zamindars (landlords) of Susang Durgapur became his opposition.
Despite strong obstacle from own family revolutionary Moni Singh courageously stood for the just cause of rural poor. This made him a well-known peasant’s leader of that area. During that time he was imprisoned again for one and a half years for demanding a fair price for jute.
British colonialism defeated but left behind its residuals, from that debris communalism erupted and so-called two-nation theory evolved, which led to the creation of religion-based Pakistan. Moni Singh and many of his fellow comrades did not accept so-called ‘two nation theory’.
They continued the struggle for secularism and socialism. Consequently, Pakistani authority declared Communist Party and him outlaw and issued an arrest warrant. It also announced a reward of Tk 10,000 for his arrest.
Despite this repression, Comrade Moni Singh played a pivotal role against Pakistani military autocratic regime. In this difficult period, in 1951, the banned Communist Party held its 2nd National Conference and Moni Singh was elected General Secretary and subsequently in 3rd Conference he again reelected at the same position.
In the Independent Bangladesh, he continued the struggle for establishing democracy and exploitation-free society. For this reason, he criticized some wrong policies of Bangabandhu Sheikh Mujibur Rahman which practically benefited reactionary forces. Comrade Moni Singh was elected as the President of the Communist Party of Bangladesh in 2nd Congress (national conference) in 1973 and subsequently in 3rd Congress in 1980.
After the assassination of Bangabandhu Sheikh Mujibur Rahman the Communist Party was declared illegal by the military government and during the military rule of Lt. Gen. Ziaur Rahman in the middle of 1977 Comrade Moni Singh was arrested again, in his mid-seventies. This legendary revolutionary remained politically active until he fell seriously ill on 23 February 1984, at the age of 82. He passed away on 31 December 1990.