Uyghurs committed frequent acts of terrorism against China throughout the 1990s and 2000s, so you actually don't need to imagine that scenario. The treatment of Uyghurs is unjust and a clear violation of their human rights, but it's nowhere near the level of depravity of the western-backed Gaza Genocide.
Sources:
https://en.wikipedia.org/wiki/2008_Uyghur_unrest
https://en.wikipedia.org/wiki/April_2013_Bachu_unrest
https://en.wikipedia.org/wiki/Xinjiang_conflict#1990s_to_200...
https://en.wikipedia.org/wiki/Gaza_genocide