Episode #76 Hitler, Stalin or Mao?

When asked to raise their hand if they know the name Hitler, the entire class raises its hand. When asked to do the same if they know the name Stalin, only a few raise their hand. Why does everyone know who Hitler is, but no one knows who Stalin is? Especially since Stalin killed at least 5X more people? Don't even bring up the heavyweight Champ of mass murder Chairman Mao who's death toll is more than 10X Hitler. Why aren't all ruthless dictators treated equally? Mr. Palumbo attempts to answer that and more.