Mr. Yao was a former Shanghai journalist and propaganda official whose writings and association with Jiang Qing , the wife of Mao Zedong , and two other colleagues -- who together formed the Gang of Four -- was blamed for helping touch off one of the darkest periods in China 's modern history , the Cultural Revolution , a period from 1966 to 1976 when China devolved into social and political chaos .
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China
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Shanghai
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Jiang Qing
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