This video didn't address racism between Native Americans. I'm Maya Yaqui and have on the rare occasion that I find a Native American who knows what that is, am told that I'm not a true Native American, even though we've been recognized by the U.S. government since the 1970's.
My aunt applied for her tribal card and was told that there were too many Yaqui still living and the existing tribe didn't want to split the government $ so the tribe wasn't accepting new members. Well, my aunt died waiting to be acknowledged by the tribe. When talking about "blood quantum" I think it's important to note that it's so you can get $$$. I would rather just apply to the tribe for the card and skip the $, and if others did too then the government wouldn't have need to keep track of our blood quantum and maybe that would ease the paranoia.