There was an article in National Review in the 1980’s that compared Nazi and Soviet art, ideals, and propaganda. I forget the title and the writer. The similarities were amazing.
I did a quick online search and found these comparisons of Nazi and Soviet propaganda posters.
https://www.google.com/amp/s/www.rferl.org/amp/24934238.html
You might say that the 20th century was the century of socialist experiments to see which ones was most sustainable, with China winning.
That ties in nicely with the propagandists line in the Hayek quote I posted above.