I wonder why it is so difficult to find information about any issue in the DPRK, such a paradise on earth should be more open to disclose its inner working to the world... It's very strange if someone think about it for more than 20 seconds, but this doesn't seem to be a concern of your it would seem.
So if the Chinese bar Tibetans from speaking their language and living their lives according to their customs while also forcing their youth to attend sino-centric schools is progress, but if Ukraine ask its russian citizens ti use Ukrainian as a language when talking with the state is ethnic cleansing. Got it