CPO (USA): Communist Party (Opposition) (1929-1942)

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Informal name of the organisation formally known as the <b>Communist Party (Majority Group)</b> (November 1929-September 1932), <b>Communist Party of the USA (Opposition)</b> (September 1932-May 1937), <b>Independent Communist Labor League</b> (May 1937-July 1938), and <b>Independent Labor League of America</b>.