Aren't all "Terrorists" separatists. Like the terrorism is a means to an end (separation). I don't think there are any terrorists who exist soley to cause terror as their end goal.
Their are a fair few cultural differences in China (even just within the "han race" let alone the other "races"[0].
But I often play the thought experiment in my head: How would the US govt react to the Latinos or the African Americans wishing to create a seperate state within the US?
I don't really see it playing out that differently to what China are doing.
Is this just a case of "China has a problem that we (the US) don't, and look at them struggle with it!" kind of thing?