'Indian' or 'Native American'?

CGP Grey has been doing research for this video for five years. Well, to be honest, that five years of research is most likely going into the series of videos that will be called Reservations, of which this one is the first. Before diving into what he's going to tell us, Grey first wants to established the language used. Therefore, here are 1300 words to explain one word. (via reddit)