China isn't doing anything of the sort. What they're doing is fighting religious extremism, the sort of which no western country would ever tolerate. It's interesting how the same people who purport to support human rights are pretty comfortable with theocracy when it suits their geopolitical interests.

Here's an interview with a son of imam killed in Xinjiang which makes it pretty clear that religious people are a target just like everyone else https://news.cgtn.com/news/2020-06-19/Son-of-imam-assassinated-in-Kashgar-s-2014-mosque-attack-speaks-out-RqNiyrcRuo/index.html

Here's another interview with Imams https://www.ctvnews.ca/world/on-eid-xinjiang-imams-defend-china-against-u-s-criticism-1.5425967

A Pakistani journalist who has been all over Xinjiang (which borders Pakistan) claims that western media reports on "atrocities" are lies. https://dailytimes.com.pk/723317/exposing-the-occidents-baseless-lies-about-xinjiang/

Western reports on Xinjiang don't support the lurid narrative you're pushing either

Representatives of Arab majority nations actually wrote a letter to the UN in support of China https://digitallibrary.un.org/record/3853509?ln=en

The reality is that US has been funding and arming extremists in Xinjiang trying to replicate Afghanistan model when they toppled a socialist government there. Don't take my word for it though, here's George Bush's chief of staff openly saying that US wants to destabilize the region, and NED recently admitting to funding Uyghur separatism for the past 16 years on their own official Twitter page. An ex-CIA operative details US operations radicalizing and training terrorists in the region in this book. Here's an excerpt:

Throughout the 1990s, hundreds of Uyghurs were transported to Afghanistan by the CIA for training in guerilla warfare by the mujahideen. When they returned to Xinjiang, they formed the East Turkistan Islamic Movement and came under Catli's expert direction. Graham Fuller, CIA superspy, offered this explanation for radicalizing the Chinese Muslims:

The policy of guiding the evolution of Islam and of helping them [Muslims] against our adversaries worked marvelously well in Afghanistan and against the Red Army. The doctrines can still be used to destabilize what remains of Russian power, and especially to counter Chinese influence in Central Asia.

US has been stoking terrorism in the region while they've been running a propaganda campaign against China in the west.

And of course, before US started weaponizing terrorists they themselves were fighting these people https://www.mintpressnews.com/us-was-at-war-uyghur-terrorists-now-claims-etim-doesnt-exist/276916/