I have worked I blue collar jobs for 7 years and white collar professional jobs for 8 years. I have worked with people of all types of races, religions, and ethnic backgrounds.
I lived in Mexican, black, Asian neighborhoods, white neighborhoods. Moreover, I lived the most diverse cities in America.
whites aren't the most racist people. they have the most power in our society, and because of that their racism stings more. Objectively, they are not the most racist people by far.
I am Asian, and I have been called gook or chink by Blacks far more often than whites. Blacks are far more likely to assume that I know a foreign language, or bring up stuff like Kung pao chicken within the first 5 minutes of meeting me.
Not all blacks are like that, but if they have any sort of "hood" in them, their outward and overt racism can be very predictable.