The thing going on in Xinjiang that we're not supposed to know about is Tibet-style "internal colonisation" and almost certainly some "ethnic cleansing". However the censorship is good enough that it's hard to say accurately.
In Chinese perspective these are acts of international terrorism related to islamist jihad (ISIS, Al Queda etc.). And talk about Xinjiang seperation from China would be what we in the west call "hate speech" since it possibly would entail cleansing of Han-chinese from the region.
However this perspective is not shared by the west which is probably why the Chinese government cannot get the same services from Google and Facebook that countries like USA or France can when comes to censoring hate speech or get logs on suspected terrorist.
Hence they have to resort to more primitive ways.
True - because we can't see what's actually going on. Undoubtedly it's a complex situation like Israel or the Balkans. But since reporting is banned, we have to do the arithmetic of "police repression" + "reporting banned" and assume that it's cover for human rights violations like what happened in Tibet.
Edit: quite a lot of the comment here looks like a not-very-convincing propaganda operation.
http://www.economist.com/news/china/21578433-region-plagued-...
This is not true. There are plenty of restrictions for foreigners travelling in Xinjiang, especially outside of the touristy areas in the main cities. Large areas are unreachable without special permits, allegedly due to "safety reasons".
http://oldroadtours.com/index.php/preparing-for-your-tour/vi...
Outside those it's mostly local gov/police not wanting foreigners walking around, not being allowed of the bus between the larger cities, them being sensitive when getting somewhat close to the border with Kazakhstan, and Bingtuan. Having "paperwork" is required then.
Plus, restrictions come and go on forcing foreigners to only travel with authorised tour agencies, or authorised guides, that won't take you to some places. And whose presence will make local people suspicious of talking to you.
In the realpolitik of the west there is an interest in keeping China occupied with internal troubles regardless of whether the people we end up supporting are nice or not.
Apparently, you're pro-Muslim and anti-Han. You may find a lot of brothers and sisters in Malaysia and Indonesia where the laws undisguisedly claim MALAY FIRST.
It's interesting that President Obama says nothing about this kind of extreme racist laws in his childhood residential country. Maybe he's pro-Muslim too?
You put a pair of quotes on "Anti-Terror" to show your anti-Han position given the facts that Han suffered most from the tension between the Government and Muslim Extremists. It's a clear sign that you're a media puppet.
China has a lot of "Affirmative Actions" against Han, including the birth control policy and Han people are furious about the situation.
Maybe some day, there will be a HAN FIRST government for you to criticize Han racists but not now.
I'm one of those that believes an individual should have the freedom to express themselves.
For what it matters, Han Chinese (urban) have historically been well-educated and get access to better jobs. If the Uyghurs (mostly rural) get decent education & opportunities, separatists' calls (and motivation) would die down.