despite causing 20x more deaths
Will people please stop saying this? "Hitler only killed six million people" is simply not true. Six million is the number of Jewish victims of the Holocaust. Hitler also murdered millions of other civilians from various groups; the usual figure given for them is about five million. Furthermore, Hitler started World War II, which killed tens of millions of people even after subtracting those who were killed because of his allies. It is invalid to directly compare a subtotal for a fascist dictator with a grand total for communist dictators.
We warn the reader in advance that the proof presented here depends on a clever but highly unmotivated trick. -- Howard Anton, "Elementary Linear Algebra"