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* Comprised of Jiang Qinq, Zhang Chunqiao, Yao Wenyuan and Wang Hongwen.
* Purpose was to organise and carry out the Cultural Revolution
* Yao criticised “Hai Rui…”, Jiang staged revolutionary operas, Zhang and Wang spoke in Shanghai and encouraged students
* Influenced education, school structures and party polices on intellectuals
* Controlled media and used propaganda outlets
* Targeted Deng and Liu; able to get Deng exiled for conspiring against Mao