After World War One the Germans had only the worst of the war coming towards them. The Allies made it so for the Germans get punished hard. I believe the Germans had it rough. What the Allies wanted from Germany was just to harsh and cruel. Germany did cause a lot of damage to many countries. But that was because of the government and Kaiser Wilhelm 2. The citizens were innocent. Yes some did join the army but the others didn't. Some points on The Fourteen Points of Wilson were fair by just giving up land, however, not the colonies that they had around the world. Also by minimizing the army. Overall, Germany did have some problems to worry about because they were literally stripped from all of their power. Which was just too cruel for them.
While the Bolsheviks were in power in USSR a communist named Josef Stalin came to power. As Stalin was in power he made his country a socialist country. So this means he put and made everybody in the county work for their economy to boost up. Their was this group of people which were named the Ukrainians. They did not want to work for USSR and wanted their own Independence from USSR. Stalin then decided to starve the Ukrainians and make them work in camps called "Gulags". As they worked some of them will die during their labor. Some Ukrainians that were not in labor camps were still starved to death. This caused deaths. Some say it was from 7 million to 10 million Ukrainians. Even though Stalin didn't kill Ukrainians like Hitler killed Jewish people. He just made them starve to death, I think that Josef Stalin did commit a genocide. He killed more Ukrainians that Hitler killed Jews. 
