The Uighurs are culturally/linguistically Central Asian Turkic and they have been Muslim since the middle ages, but their ancestry is mixed; prior to the medieval invasion of Asian Turks, the people of the region were the descendants of a White Indo-European people called the Tocharians, who migrated to China from what is now Ukraine and Russia thousands of years ago. This has been a very controversial issue for the Chinese, as they are an incredibly racist people and don't want to admit that non-Asians lived in what is now China.
This racism got so bad that when ancient Tocharian mummies (AKA the Tarim mummies), with their obvious European features and stature, have been discovered in the western desert, Chinese authorities have sometimes ordered the heads of the mummies to be removed and destroyed! It is only through the pressure of western archaeologists that any Tocharian mummies have been properly preserved.
Even to this day, Uighurs retain many European features - lighter skin, fairer eyes, and sometimes even blond or reddish hair. Some Uighurs can make good money in China as models because, despite Chinese racism, Whites - or people with some White features - are considered more attractive to the Chinese. This is one of the reason why, in their campaign to colonize the Uighur region, Uighur women are being forced into marriage with ethnic Chinese men - they want to both co-opt and destroy that European bloodline.
Officially, the Muslim Uihgurs are being targeted by the Chinese because it is claimed that they have become radicalized and pose a security threat (though, until the Chinese government started clamping down on the region, there wasn't much of any radicalization) - but the real reason is racial resentment to an ancient, partially European population living within China's borders.
https://en.wikipedia.org/wiki/Tocharians
https://en.wikipedia.org/wiki/Tarim_mummies
We're already at war with China, and it isn't because of their muzzie slave camps.
China seeks the destruction and replacement of the west, especially America. That is their #1 goal.