Well, I agree with you that there's a difference between looking at racism within the United States compared to racism in various other countries.

There are probably very specific cultural nuances unique to different Slavic nations that I'm unaware of, but it would be educational to learn more about them if Katie chooses to expand upon them in her future writings.

Your example using Nazi Germany, however, offers a moot point. Even if we were measuring racism ONLY based on skin color (and I view race/racism as far more complex than that), the Nazis' terrorization of Jews would be far more severe than merely "prejudice" because it was actionable or behavioral; at bare minimum, it would be religionism, since they were trying to brainwash the public into believing that Judaism was inherently immoral.