FILE - In this Nov. 2, 2017, file photo, a police personnel holding shield and baton guards a security post leading into a center believed to be used for re-education in Korla in western China's Xinjiang region. Human Rights Watch says it has found new evidence that authorities in one of China's most repressive regions are sweeping up citizens' personal information in a stark example of how modern big-data technology can be applied to policing, and potentially abused. (AP Photo/Ng Han Guan, File)
{}