In Weimar Germany, IMO, the difference between the Nazis/Fascists and the Communists were pretty slight. The Communists wanted to take orders from Moscow. The Nazis were Nationalists. Beyond that, they were all Collectivists who were willing to do anything to grab power.
In America today, we have ANTIFA, BLM and they are basically Globalist Communists (Trotskyites, in my view). But they are not significantly different from Fascists. Horst Wessel would join them in a heartbeat.
“Controversial problems [between Germany and Russia] did not, in my opinion, exist anywhere along the line from the Baltic Sea to the Black Sea and to the Far East.
In addition, despite all the divergencies in their views of life, there was one thing common to the ideology of Germany, Italy and the Soviet Union: opposition to the capitalist democracies in the West.”—Julius Schnurre, Nazi trade rep to Russia.
Rise and Fall of the Third Reich by Shirer. Page 501 in my copy,
....relevant info...! from Wikipedia...
“Antifaschistische Aktion, commonly known under its abbreviation Antifa, was a militant anti-fascist organisation in the Weimar Republic started by members of the Communist Party of Germany that existed from 1932 to 1933.”
Compare this outfit’s logo with the logo of today’s Antifa.... Somewhere in the nether reaches of Hades, Herr Wessel must be wondering “Was is’ los?”