The man being interviewed -- blurred out so that Chinese enforcers don't sentence him to prison like they did the creator of this film -- says that he is working so that all Tibetans can be as one big family. He says it's important that they are all educated in their own culture and their own language.
Is it? My linguist friend [...herein misrepresented...] has tried to convince me that there's no reason for Americans to try to stick to one language. I'm skeptical, and believe that a culture/civilization will fall apart in the absence of a shared linguistic tradition.