The world’s fashion brands need to confront—and abandon—their complicity with human-rights atrocities being perpetuated against Uyghurs, Kazakhs and other Turkic Muslim minorities in the Xinjiang Uyghur Autonomous Region (XUAR) of northwestern China, a coalition of more than 180 human-rights groups announced Thursday. With Xinjiang producing more than 80 percent of Chinese cotton, according to Washington…