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In page Communist Party of New Zealand:

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The CPNZ was beset by rapid membership turnover throughout the late 1920s and early 1930s, with general secretary Griffin accused of operating a personal dictatorship, spurring rank-and-file discontent.[6] The CPNZ was also subjected to unrelenting police operations by the national government, including a July 1929 raid which seized the internal records and literature of the Wellington branch and the subsequent successful prosecution of five members of the governing Central Executive Committee for possession and sale of allegedly seditious literature.[6] Party leaders were particularly targeted, with three more members of the Central Executive Committee arrested in 1930, four more in 1931 and 1932, and all seven members in 1933.[7]