[johnrichardson]

Adolf Hitler: ~9 million deaths

Joseph Stalin: Estimates range from 3 million - 60 million deaths.

Mao Zedong: Estimates range from 49 million - 78 million deaths.

All evil men. Why aren't the latter two nearly as reviled as Hitler or 'Nazis'?

[SCdF]

You mean, why aren't they idolised as much? Or used as a racist symbol to rally around as much?

The reviling comes as a reaction to the idolisation, and the use of that figure as a racist symbol to rally around.

Otherwise, you revile them while you do history in high school, and then move on with your life.