Just to clarify about the 100 million number. That's the sum total of all deaths caused by the actions of various communist regimes. 60M in China, 20M in the USSR, 1M in Cambodia, and others as well. One thing that's not often mentioned is that a substantial minority of those deaths are the consequence of communism-induced famines, namely in China and Russia. Lyzenkoism is credited with a lot of deaths.