A side note: The terrorist attacks (what the CCP states) in Xinjiang was rampant. Every years hundreds of innocent people were killed. And due to media control, those reports seldom see publicity outside of small forums in the first a few months following the events.
ps1: Whether or not those attacks are done by terrorists, or oppressed minorities, I have no comments. ps2: This not a defend. Merely suggest one of the motivating factors. Whether or not CCP intentionally let that happen so they can do this, I have no comments.