Gang of Four, made of the most extreme members of the Shanghai forum (one of them being Mao's wife, Jiang Qing), launched an attack on the moderates such as Liu Shaoqi and Deng Xiaoping, demanding that they, along with key artists and writers, were removed from their posts due to "disloyalty to Mao's revolution"
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The purge of the Group Five (a set of moderate officials led by Peng Zhen, the mayor of Beijing)
The Central Cultural Revolution Group, a subcommittee of the Politburo, was established in 1966, and became a key figure in the purges