I don’t know, so I looked it up, racism vs. tribalism. I am not sure I have ever looked up “tribalism” in my life. And I sure as hell am not going back to school to have some Leftist professor indoctrinate me.
I always felt that tribe is just a word that ties groups of people together, and can be used in positive or negative ways., the caveat being that you have to WANT to be part of that tribe to be a member. I don’t think one must be an indigenous person to be part of a given tribe.
Maybe part of racism is the shoe-horning of someone into a “Tribe” of some kind as a way to deny them their individualism (and doing it out of ideological reasons)
That said, I understand your concern of the shifting meaning of “Tribe” over the years. THAT is what they do.
Tribalism is a good word to describe when the powers that be herd us all into identity groups and people start being proud of being labeled and segregated.
Sad.