Turns out “six million” was an exaggeration — the actual death toll was “only” 3.5 million.
https://en.m.wikipedia.org/wiki/Holodomor
Still, that is a whole lot of people kicking the bucket either through the failures of communist economic policy or deliberate targeting and persecution by the Stalin regime, or some mixture of the two. Jury’s still out on that. (Sadly, the Putin regime doesn’t seem all that interested in getting to the bottom of this, for all the usual reasons dictators aren’t eager to examine history.)
Take your pick: Woeful resource mismanagement under communism or blatant industrial-scale violations of human rights. Which one?