Okay, one might note a whole other topic of discussion there, but the point remains, tribalism and heirarchy are the root of all prejudice, and they weren’t invented by Portuguese slave traders.
That's kind of what I'm getting at, man. Tribalism and hierarchy are related to racism, but calling all prejudices racism makes the term so broad as to be borderline useless. Racism, as we would recognize it, dates to the early modern period.