What was one major similarity between the soviet union under joseph stalin and fascist italy under benito mussolini?

Both countries used propaganda to influence citizens' beliefs.

 The two leaders used authoritarian instruments such as the police or security apparatus to silence dissents. as a result millions of people disappeared and millions more were killed in kangaroo circumstances. It is Stalin who did more harm because he lasted more, anyway..

But weapons alone can't account for the breathtaking speed with which the indigenous population of the New World were completely wiped out. Within just a few generations, the continents of the Americas were virtually emptied of their native inhabitants – some academics estimate that approximately 20 million people may ...

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