"Cultural Revolution", Mao's 10-year political and ideological campaign aimed at reviving revolutionary spirit, produces massive social, economic and political upheaval. 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.