America is a deeply racist society. It's built on the genocide of the Native Americans who are still largely kept in poverty in virtual prison camps we insultingly call reservations, by racist policies.
The legacy of racism against African Americans is still deep and real - have you any experience as a black person in the Southern states? If so then I'll respect your opinion on that topic, but as a White person who came to the US from a different country, and then lived in Texas for a few years, the levels of racism are disgraceful.
The entire hispanic ag-business-driven immigration problem hinges on institutionalized racism.
Then we don't even touch on disparities like over-concentration of poverty in minority communities, incarceration rates, under-representation in positions of power and seniority etc.