A decade of unrest in the People's Republic of China occurred after Mao launched the 'Cultural Revolution'. Young people formed the Red Guards around the country and humiliated, jailed and beat senior leaders of the Communist Party in an effort by Mao to consolidate his power. Wikipedia describes it:
The Great Proletarian Cultural Revolution, commonly known as the Cultural Revolution was a social-political movement that took place in the People's Republic of China from 1966 through 1976. Set into motion by Mao Zedong, then Chairman of the Communist Party of China, its stated goal was to enforce communism in the country by removing capitalist, traditional and cultural elements from Chinese society, and to impose Maoist orthodoxy within the Party. The revolution marked the return of Mao Zedong to a position of power after the failed Great Leap Forward. The movement paralyzed China politically and significantly affected the country economically and socially.
The Revolution was launched in May 1966. Mao alleged that bourgeois elements were infiltrating the government and society at large, aiming to restore capitalism. He insisted that these "revisionists" be removed through violent class struggle. China's youth responded to Mao's appeal by forming Red Guard groups around the country. The movement spread into the military, urban workers, and the Communist Party leadership itself. It resulted in widespread factional struggles in all walks of life. In the top leadership, it led to a mass purge of senior officials who were accused of taking a "capitalist road", most notably Liu Shaoqi and Deng Xiaoping. During the same period Mao's personality cult grew to immense proportions.
Millions of people were persecuted in the violent factional struggles that ensued across the country, and suffered a wide range of abuses including public humiliation, arbitrary imprisonment, torture, sustained harassment, and seizure of property. A large segment of the population was forcibly displaced, most notably the transfer of urban youth to rural regions during the Down to the Countryside Movement. Historical relics and artifacts were destroyed. Cultural and religious sites were ransacked.
Mao officially declared the Cultural Revolution to have ended in 1969, but its active phase lasted until the death of the military leader Lin Biao in 1971. The political instability between 1971 and the arrest of the Gang of Four in 1976 is now also widely regarded as part of the Revolution. After Mao's death in 1976, reformers led by Deng Xiaoping gained prominence. Most of the Maoist reforms associated with the Cultural Revolution were abandoned by 1978. The Cultural Revolution has been treated officially as a negative phenomenon ever since.