China is facing growing criticism over its persecution of some Muslim minority groups, huge numbers of whom are allegedly being held in internment camps.
In August, a UN committee heard that up to one million Uighur Muslims and other Muslim groups could be being detained in the western Xinjiang region, where they're said to be undergoing "re-education" programmes.
The claims were made by rights groups, but China denies the allegations. At the same time, there's growing evidence of oppressive surveillance against people living in Xinjiang.
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