This silly story of Liz Warren claiming to be Indian. - feather not dot - ooops Native American - hits a low in racial classification.
I think the last time that anyone was classified as a minority because of their great, great, great grandmother was in the 30's in Nazi Germany. I don't think the slave States in the south considered that Negro - the term used at the time for people subject to slavery.
Of course, when you like to hyphinate, that is where you get to.