Mussolini was a communist until he set up his own murderous collectivist ideology in competition ...
Hitler openly called his ideology National SOCIALISM ...
But communists control Big Media and Big Education, and don’t want to be associated with defeated ideologies ... so they created the fiction of fascism being “right wing”.
Prior to WWI Mussolini was senior editor of the major socialist pub Avanti!, founded a socialist newspaper Il Popolo d’Italia and was a member of the Italian Socialist party’s National Directorate.