May 2014 Urumqi Attack - 43 dead, 90+ injured, bombs thrown from SUVs waving Uyghur-language flags while running over civilians in a marketplace
https://en.wikipedia.org/wiki/May_2014_%C3%9Cr%C3%BCmqi_attack
April 2014 Urumqi Attack - 3 dead, 79 injured, claimed by the Turkistan Islamic Party (TIP), a Uyghur terrorist organization recognized as such by the UN
https://en.wikipedia.org/wiki/April_2014_%C3%9Cr%C3%BCmqi_attack
1997 Urumqi bus bombings - 9 dead including 3 children, 28 injured, perpetrated by Uyghur separatists
https://en.wikipedia.org/wiki/1997_%C3%9Cr%C3%BCmqi_bus_bombings
2014 Kunming Attack - 31 dead, 140+ injured by knife, perpetrated by radicalized Uyghurs who were on their way to participate in jihad abroad but were denied at the border
https://en.wikipedia.org/wiki/2014_Kunming_attack
2011 Hotan Attack - 18 dead, claimed by East Turkistan Islamic Movement (ETIM), later rebranded to TIP and still recognized by the UN as a terrorist organization
https://en.wikipedia.org/wiki/2011_Hotan_attack
2011 Kashgar Attacks - 23 dead, 42 injured, attackers confessed to jihadist motives and membership in ETIM
https://en.wikipedia.org/wiki/2011_Kashgar_attacks
There are way more incidents besides these, but you get the point. How did you not know ANY of this? You come off as either extremely gullible or comically uninformed. Are you still looking for WMDs in Iraq, buddy? It's clearly a heavy handed anti-terrorism/extremism effort.
The Hui Muslims are just fine, and religious and ethnic minorities in China were exempt from the one-child (now two-child) policy for the entirety of its existence; minorities even get big affirmative action points on the 'gaokao,' their be-all-end-all university entrance exam. China isn't even targeting all Uyghurs for their "vocational training centers." There are 11 million+ Uyghurs in Xinjiang and even the most academically bankrupt estimates have the number at a million (they interviewed EIGHT Uyghurs from a single prefecture to come up with that guess by extrapolating over the entire population). Who do you think you're fooling? Wait, I know: Other gullible people like you.