For Nazi Germany it was because Germans were "superior race". For Soviet Russia it was because the proletariat was the superior class. Every other class was to

For Nazi Germany it was because Germans were "superior race". For Soviet Russia it was because the proletariat was the superior class. Every other class was to be destroyed. Lenin's Hanging Order is a nice example of that: https://en.wikipedia.org/wiki/Lenin%27s_Hanging_Order https://en.wikipedia.org/wiki/Lenin%27s_Hanging_Order