Yeah, let's blame everything on whitey, because white people have only brought evil into this world.
1. White supremacy is a white invention
Wow, imagine that. I thought a black guy invented white supremacy.
2. anti blackness is a white invention
Who else would invent it, though, when all the people bordering black realms are white? Assuming you mean black Africans, because racism against black-skinned people was practiced by the Thai, Indians, and Malays long before whites came there.
3. white people colonized almost the entire fucking world and spread their system and their cultures everywhere, including racism
White people did it because the opportunity was there. Any other culture would've taken that opportunity if they could. And they would've spread their own systems and cultures with it, including their own variety of racism, which is known in countless cultures.
4. What racism is known as in many parts of the world was directly invented and carried out by white people, white supremacy is a global phenomenon
Yeah, because certain peoples of Africa didn't hate other peoples of Africa before colonialism--white people couldn't have exploited those ethnic divisions to make them worse if they didn't already exist. And look at the various pygmy peoples, who nobody liked--did white people come up with the idea that killing and eating a pygymy will give you magic powers, like we saw soldiers in the Congo Wars say to explain their crimes?
Don't forget about some glorious historical examples, too, like the Dzungar genocide committed by the Chinese in the 1750s, where the orders were to explicitly destroy their culture and kill all of them. That's a non-white culture killing hundreds of thousands of people based solely on their race. There's also the Vietnamese destruction of the Cham people, who once controlled all of modern-day South Vietnam. Today barely any Cham remain, thanks to Vietnamese destruction of their culture.
5. the way that race is popularly defined was also created by white people to promote white supremacy
Only because white people politically ruled the world. Otherwise we'd see Chinese conceptions of race instead, which most certainly existed and had zero influence from white people.
Aside from that...
So China and the Han people considering themselves the center of the world and the most superior (tianxia), so much so they enshrined it in their law up until the 19th century, wasn't motivated by any sort of racism or sense of supremacy? What about Arab people slavetrading, or do they count as white?
What about the Maori, who invaded the Chatham islands and proceeded to kill, enslave, and eat the local people? That's an interesting case, because they stole a European ship to get to an island already visited by Europeans, but nowhere in white supremacy do we have eating the inferior races being common. Imagine that, non-white people innovating and expanding upon racism. You would know it, assuming you're Japanese or know anything about Japanese history, because we all know how the Japanese have a knack for taking white ideas and putting their own spin on them. And when you get brilliant ideas like racism, you get the Rape of Nanking and all the great stuff of the Second Sino-Japanese War. Racism in the modern world is indeed largely a white invention, but you can't deny non-white people have put their own horrific spin on it that no white person would ever come up with.