> Though only US-americans (and Nazis, weird coincidence) think that genetic differences between humans mean that they are of a different race.
I don't even know what this comment is supposed to mean. Is it saying that other nations don't subscribe to the notion of "race?" Because that's complete BS, as anyone who has travelled outside of the US would know.
Do we bring up apartheid in South Africa? European colonialism, and their views on race? Chinese views on race? Racism in Brazil? Saudi Arabia? Russia? I'm just confused as to what you mean.
Here's a simple example: The Wikipedia article on Race (human categorization), https://en.wikipedia.org/wiki/Race_(human_categorization), has a list of translations in the left column, with something like 60 languages listed. I can only read four others (Italian, French, Spanish and Portuguese), but they all say pretty much the same thing as each other.
I think any person with any understanding of the subject can agree that scientifically, the categorization of humans into "races" is meaningless and absurd, but this certainly doesn't mean that people all over the world do have this social construct. And most cultures also have a long list of stereotypes and assumptions that they apply to different "races."