Aren't you being a bit dismissive? Many of us have Eastern European peasantry as our ancestors. Serfdom in Eastern Europe existed well into the nineteenth century explicitly by law or implicitly by local practice. I believe the Russian form of serfdom not only tied a serf and their offspring to the land, but eventually allowed the buying and selling of serfs. The Ottoman Empire and Imperial China allowed slavery within their borders into the twentieth century.
Certainly, we should not forget about Jim Crow and other forms of institutionalized racism. We also realize a White Eastern European could migrate to the Americas and blend into society easier than Blacks. However, the fact remains that slavery as primarily a white on black institution is historically inaccurate.
OK, where are you taking this? Is your folks' experience as Ukrainian serfs relevant to the North American experience?
My grandfathers had a grade 7 education and worked for a shilling a week in coal mines in the UK. Aside from making me not like rich, titled English nobility a lot, what real significance does it have in Toronto in 2020?.... None.
But black is different.