Since the situation in Xinjiang has not hit mainstream media yet, these are the camps the parent poster refers to:

https://www.independent.co.uk/news/world/asia/china-re-educa...

The estimated number of inmates keeps growing by the week. I think it's more accurate to call them re-education camps, but it's an issue that I wish more countries would push China on. I don't get why our (German) government spent so much time on negotiating the Liu Xiaobo issue instead.