A Muslim Uighur child holds a flag of East Turkestan as he chants slogans on December 13, 2019 during a demostration in front of China Consulate in Istanbul. - One million Uighurs and other mostly Muslim minorities, including ethnic Kazakhs, are believed to be held in re-education camps in China's northwestern region of Xinjiang. (Photo by Ozan KOSE / AFP) (Photo by OZAN KOSE/AFP via Getty Images)