1975 doesn't seem that long ago. Goes to show that we're not out of the dark ages when it comes to state-sanctioned racism, even among supposed "progressive" nations. The US, if anything, is much less progressive than the USSR was at that time.
This seems like a pretty baffling conclusion. Why do you think that’s the case?
https://en.wikipedia.org/wiki/Racism_in_the_Soviet_Union
https://www.wilsoncenter.org/blog-post/black-skin-red-land-a...
https://en.wikipedia.org/wiki/Afro-Russians#Early_Soviet_per...
https://journals.sagepub.com/doi/abs/10.1177/000271627743300...
https://www.newyorker.com/magazine/2002/06/10/the-affirmativ...
https://interzine.org/2021/03/18/was-the-soviet-union-racist...
In either case the leadership of the USSR was just reversing course with force on the issue around that time. I wouldn't put that bygone state on either side outside the spectrum that are the USA.
Are you joking? In what respect is the USSR of the 1970s more 'progressive'(so-called) than modern-day America?
https://www.businessinsider.com/the-ivy-leagues-history-of-d...