Many countries were built with the labour of slaves. I'm a slav, from a slavic country, and the words "slav" and "slave" are not just coincintally similar. We were also a communist country, and the definition of 3rd world (and technically leaders of the 3rd world/nonaligned at the time).

Somehow we have no issues with master/slave. Most people (except failed students and former party members) know communism was a really really shitty system. And most of the current racial issues are imported from america, during the democrats-vs-trump "battles", and are so americanized, that people forget minorities here (gypsies,...), and use BLM for maybe 10 black people that live here.