I mean, just off the top of my head, read about the indian caste system. It's over 3000 years old. Skin colour factored here, and in caste systems in South East Asia, because, of course, the lowest people did all the outdoor work. That's why, even today, many people in Asia equate light skin with beauty and even buy skin bleaching products.
But I didn't say anything about white people inventing racism, I said that America didn't invent racism. People have been hating each other for arbitrary reasons since time immemorial. Look at the Israelis and the Palestinians, look at Catholics and Protestants, look at the Tutsi and the Hutu. Nobody has a monopoly on this stupidity.
Note that Nazi Germany didn't spare people just because they were white, The Russians and the British and most of Europe can attest to that. They also allied with the Japanese who obviosuly aren't white. Skin colour was only a part of the picture there. They believed their type of whiteness was superior, not necesssarily whiteness in general.
If you're condoning generalisations, women could make exactly the same claims about men as you're making about white people here, and with far better justification. The vast majority of white people pose no threat to you and have zero power over you. But the vast majority of men pose a serious threat to the vast majority of women. Do you think it's right to treat you as a rapist because almost all rapists are male? Or do you think it should be remembered that almost all males are not rapists?