Ö÷²¥´óÐã

China is now thought to be holding more than a million Muslims in giant camps in its far west region of Xinjiang. The authorities insist that the facilities are not prisons but schools, where ‘thought transformation’ is taking place to combat violent extremism. Reporter John Sudworth gets rare, highly controlled access to go inside and, despite official supervision, uncovers important evidence about the nature of the system.