It may not be delicious irony but it is surely irony defined when an organization named anitfa(scist) didn’t go to the trouble to research exactly what a fascist means and then adopts methods used by the 1930’s German fascists.
The rampages of the Brown Shirts during the late 1930’s around Kristallnacht weren’t inherent to Fascism but it was inherent in Naziism.
Fascism was the child of Socialism first envisioned by Benito Mussolini who was then a high party official of the Italian Socialist Party.