You fail to mention the holodomor. Soviets responsible for katzn were still receiving their pensions even after the Russians admitted they were responsible. FDR was informed that the Russians were responsible and he sent the informant to Samoa.
I didn’t mention Cambodia, either, even though lots of people mistakenly call it genocide. What happened in Cambodia was democide, not genocide.
The Holomodor was a ghastly crime against humanity. But was it genocide or democide? Some believe it was intentional (genocide), others that it was collectivization gone terribly wrong (democide), while still others believe it started out as the latter and then Stalin decided not to let a crisis go to waste.
It was part of the wider Soviet famine which affected various parts of Russia as well as Ukraine, and millions of Russians also died of starvation during that famine.
A dear older friend who was Ukrainian (now sadly deceased) told me how her farming family in Ukraine was denounced as “kulak” by other villagers because they were hardworking farmers more successful than their lazier neighbors when the commies took over. It went like this: if you worked hard and had two cows, your jealous neighbors would denounce you in hopes the stinky commies would give them their your stuff (including those cows!) after they dispossessed you. It turned out her family survived because they had to flee after losing all, and ended up in a large Russian city before the Holomodor struck.
She didn’t hate Russians because of the Holomodor, though, not a bit. After all, Stalin was a Georgian and Trotsky was a Ukrainian. She did despise communism and what it did to her and her family and her people.
A number of people here on FR seem to think Ukrainians hate Russians because of the Holomodor. Huh. The Ukrainians who really hate Russians are in Western Ukraine, in what used to be Eastern Galicia and Volnhynia which were part of Poland at the time of the Holomodor.
Back to democide. The commies are by far and away the kings of that, with a body count of over 200 million.