Lwin served as the secretary of the Oilfield Workers' Association between 1938 and 1941. Lwin's discourse for organising workers was based on a combination of nationalism and communalism. He and other revolutionary leftwing Thakins mobilized support for the oilworkers' strike of 1938, giving revolutionary speeches in favour of Marxism-Leninism. Basing themselves of the experiences of the oilworkers' strike, a preparatory committee to set up a 'All Burma Workers Asiayone' was formed in 1939. Lwin was one of the members of the preparatory committee. During the Second World War, Lwin was put in charge of the Pakokku District by the People's Revolutionary Party. In 1945, Lwin became a Central Executive Committee member of the People's Freedom Party. In 1947 he was elected as a member of parliament.
Post-war
In 1949 he became the president of the Trade Union Congress. Under Lwin's leadership, the TUC steered towards an openly communist line. At the May Day rally of 1950, TUC demonstrators had carried large portraits of Karl Marx, Friedrich Engels, Vladimir Lenin, Joseph Stalin and Mao Zedong. In his speech at the rally, Lwin publicly declared that TUC followed the 'communist party line' and said that the organisation should join the World Federation of Trade Unions. He harshly condemned the policy of the Burmese government of accepting British financial aid. But he also denounced the White Flag Communist Party, Red Flag Communist Party and Josip Broz Tito as 'deviationists'. Lwin's speech made the ongoing division in the Socialist Party public. Lwin's May Day speech had political repercussions, but did not result in any immediate disciplinary action from the Socialist Party or the AFPFL. However, when the TUC vice-president and AFPFL Member of ParliamentThakin Hla Kywe lashed out at the governments support for the Korean War in September 1950, the AFPFL decided to suspend the TUC from the AFPFL. The AFPFL demanded that Lwin and Hla Kywe be removed from their positions in order for the TUC to be reintegrated into the AFPFL. The TUC complied and demoted Lwin and Hla Kywe. In December 1950, Lwin was one of 42 leading cadres of the Socialist Party which denounced the party leadership of Ba Swe and Kyaw Nyein and went on to found a new party, the Burma Workers and Peasants Party. Lwin became one of the main leader of the BWPP. Lwin became the president of the Burma Trade Union Congress. During the 1950s he was active in the National Unity Front, and electoral front launched by the BWPP ahead of the 1955 elections. He also served as the Chairman of the Burma Conference to Defend World Peace. Lwin retired from political life following the 1962 coup. However, with the democratic opening in 1988, he again became active in politics in September 1988. He became chairman of the People's Democratic Party. His party become officially registered on 4 October 1988.
Literary and journalism career
Lwin founded the Shudaung Journal in 1969 and was the chief editor of the journal until its closing in 1971. He also wrote several books. The notable ones are:
Lwin died in his Yangon residence on 20 December 1996. A funeral service was held on 24 December 1996. It was attended by family, friends, politicians and diplomatic representatives. Aung San Suu Kyi was barred from assisting the funeral, as she was under house arrest. Her party, the National League for Democracy, was represented at the funeral by party vice chairmanKyi Maung.
