Why is the United States so segregated?

[arcaneguyver]

"In this text, I used the word "racism" meaning "the act of diving people into races". It was the best word I could find to describe it."

Unfortunately you fell into a bit of a trap - in western cultures the term has been redefined so minorities can't be racist (that requires power & privilege). And even if they do happen to discriminate based on skin color, they're just "colorist." Higher education is basically required for many people here in the US to get a job with a decent income, and getting a degree requires both going heavily in debt (probably to the government) and taking a number of social justice courses, where this sort of teaching springs forth. And from these courses aspiring young minds learn how white people are racist, denying it is racist, and ignoring race is also racist.

So yeah, if it seems we're obsessed with race, a good starting point as to understanding why is how most kids are being taught to think that way these days. And from there it spreads to mass media, so even those who haven't had formal classes get exposed to it.