Authorities in northwest China’s Xinjiang Uyghur Autonomous Region (XUAR) have sentenced a young ethnic Kazakh wrestler to 15 years in prison for sharing a song by a Kazakhstani musician on social media, according to a former internment camp detainee. Kastar Polat, a 20-year-old man from Chaghantoqay (in Chinese, Yumin) county, in Ili Kazakh (Yili Hasake) …