Good question because it is so evil:
"Self-interest and individualism are just ways of saying that the life and happiness of the individual human being has value. Throw out these principles, and the life of the individual can be sacrificed, in whole or in part, with no limit. If an individual needs to be tortured for the good of the system, or worked to death in the gulags, or shot in the back of the head and tossed into a ditch—well, you can’t make an omelette without breaking a few eggs, right? And the more eggs you break, the less each one matters. A single death is a tragedy, a million is a statistic. No one knows for sure if Comrade Stalin really said that, but we know he acted on it."
"What Communism taught us is that a system that doesn’t value the individual human life does not value human life at all. And you cannot value the individual human life without valuing its happiness, its freedom, and its private interests."