Here are some interesting facts related to this topic:

• These claims are promoted mainly by the US government and US media
• The USA has invaded many Muslim countries over the last decades, killing millions of innocent civilians
• Most Muslim countries support China's Uighur policies, western nations oppose them
• According to Biden, USA is in "extreme competition" with China
• Xinjiang is a vital part of China's "Belt and Road" infrastructure project, because it provides the shortest path to Europe

Edit: One more thing, here is a list of terrorist attacks in Xinjiang. Note how there were no more major attacks after the vocational training program was established.

There is even a US military base in the middle of Seoul. And military police walks around (presumably to prevent their soldiers from being too violent against civilians). Also lots of night clubs in Seoul have signs that US soldiers are not allowed to enter.

I'm not into anime, but if you are then you should check out the one about Marx, from China.

https://www.youtube.com/watch?v=0T0a_jXHiDo