The majority of people in prison here are political prisoners. Some of them were participants in the Chinese democracy movement and Tiananmen Square protests of 1989. Famous inmates include Jiang Qing, Bao Tong, Dai Qing, as well as Tibetans such as Choekyi Gyaltsen, the 10th Panchen Lama, and Phuntsok Wangyal. Other inmates included many communist cadres who were criticized during the Cultural Revolution, such as Bo Yibo, Peng Zhen, Israel Epstein, Sidney Rittenberg and David Crook. 2010 Nobel Peace Prize winner Liu Xiaobo was also imprisoned here.