That's the old Soviet narrative, Fascism == Capitalism on steroids.

Mussolini invented "fascism", he came to power a decade prior to Hitler.

Did you know that he used to be a high ranking socialist who turned against his comrades?

Europe, especially Germany, was flooded with refugees from the Russian civil war after WWI. They brought plenty stories of "Bolshevik cruelties".

The old establishment was radicalized to support those maniacs in order to "defend themselves".