United Nations human rights chief Michelle Bachelet is on a six-day trip to China. Her visit will include time in the Xinjiang region, where China has been accused of the mass imprisonment and torture of Uyghurs and other Muslims. On Tuesday, a coalition of news outlets published a series of articles based on internal Chinese police documents obtained by hackers. The trove of documents include thousands of photographs of detained Uyghurs, as well as details about a shoot-to-kill policy targeting anyone who tried to leave the detention camps.