Should Mao be counted as well, then? Lot's of people died under his rule, but I don't think that came down to evil. It was all a massive case of "the emperor's new clothes", if you ask me.
First, great land reform. Everybody rallied to produce as much grain as possible to drive Mother China forward. Production numbers were exaggerated to the point past hilarious and into "tragic territory". Everybody wanted to prove that they were the best, producing about a ton of grain per ten square metres. And because everybody said that they could produce that much, the minimum quota was set so high that the farmers had to hand in their entire crop production, leaving nothing to eat. The official numbers said that a lot of grain had been collected. "That's cool", thought the people in charge. Lots of people starved to death.
Then, great steel reform. Now that there was plenty to eat and the grain silos were full (yeah, right), the people could focus on other things. Every little village set up small furnaces to produce home-grown steel. Ore was handed out, steel plates were given in return. On paper, steel production soared. In practise, the steel was of terrible quality (somebody forgot to mention that uneducated farmers with home-built clay furnaces don't have the best qualifications to make solid-strength steel), people melted down pots, pans and more importantly tools to meet the quota, and China was stripped of forests to fuel the furnaces. And there were fewer workers working on feeding people than ever. They had no tools to work with either. But steel production was tremendously high, on paper. "That's cool", thought the people in charge. Lots of people starved to death.
Some point down the line, I can't remember exactly when, it was determined that birds eating crops was the single reason behind low crop productions. The solution: Kill ALL the birds! It worked. Birds were killed. But the problem was, the birds didn't feed on China's growing crops. They fed on China's growing locust population. Locust swarms ensued, and even more crops were destroyed than ever. But the birds were gone. "That's cool", thought the people in charge. Lots of people starved to death.
Gah, history lesson. All this to say that Mao wasn't that evil, it was mostly delusions backed up by numbers on paper that led to the great famines other bad stuff. I don't know the Soviet history that well, but it seems like similiar things could have happened under Stalin. And it sure happened under the Kims of North Korea.
Better get back to rehearsing calculus now. Weird how inspirational exams can be.