Although I agree the government ought to negotiate in good faith in these situations, Professor Newman seems to be hinting that indigenous peoples ought to have an absolute veto over these sorts of projects. 

If you own some land and the government decides it wants to build some important infrastructure project (such as a dam), my understanding is that they can expropriate your house even if you don't feel like selling. 

I'm sure we would all like to have the right to tell the government official knocking on our door to go jump in the lake. But there is always a balancing act here between the rights of the individual and the good of society as a whole.