There were several terrorist attacks by Uighur separatist groups. The Chinese authorities use Western War on Terror rhetoric to justify the ethnic cleansing, warrantless mass-surveillance and censorship.

It's a shame Western states institute the repressive laws that they do, as for the most part, the Western states are vastly better than the CCP on civil liberties, and the few deviations from an otherwise strong commitment to liberal democratic principles prevents the West from having the kind of moral high ground it would otherwise have.