Note that I did not claim China doesn't have racism. But by personally comparing my experience growing up Asian in the U.S. (having lived in non-diverse small Midwest towns for several years) with the experience of Caucasian friends who spent some childhood years in China, I'd really have to say: they got a much, much better experience as far as race is concerned.

And every time that I have confronted a Chinese person about prejudice against black people, I also asked them where their preconceptions came from. Without exception, they tell me that they have no first-hand experience, but they get all their information from American movies, whose makers they assume to know more about American culture than they do.

But if you actually want to compare relative levels of racism quantitatively (which is hard because there are so many confounding factors), I challenge you to compare the incarceration rate of African Americans in the U.S vs. African Chinese in China.