I am 6% lenape native american,(not much but a whole lot more than liz warren) You know what is an insult, someone saying they are native to get grants, political benefits etc when they really are not native at all. The fact that someone called that liar liz out makes me glad. What is even worse is that we are judging people by their skin for jobs I.E. affirmative action etc.when we should really be taking the best person for a job, grant etc. If you want to give grants on basis of poverty not race, that is fine by me.
Another thing, calling someone "Pocahontas", a female native american hero is no where near like calling Booker a slur.