Tbf some people in Africa don't know what racism is either. In some places white people are not that regular and some kids in the country side never even saw a white person, much less ever faced or understand the concept of racism. If you are somewhat isolated in a comunity you won't get it until you start watching more problematic Tv or movies. Maybe that's what this polish person said
I live in a big country, in a big city, and I don't get why racism is even a thing, imagine being isolated!?