Perhaps you don't realize there are many types of serfdom and Tibetans are in fact still serfs because you donot control your own destiny. China controls the destiny of Tibet.No it's not. Serfdom isn't just a bad word. It's a very specific type of feudal social class. Tibetans are *not* serfs. They're suffering under a totalitarian government yes, but they're not, for instance, tied to their land.Whatever Tibet wishes to become it may only do what China allows.
That is sefdom.
Its also a metaphor for an underclass that doesn't have control of their political destiny. See Hayek's "Road to Serfdom", a classic study which addresses the problem of freedom in a planned society.