Marxists aren’t fascists, though. Fascism is insepparable from Capitalism and bourgeois interests. Further, considering Marxists to be “authoritarian” implies that the only non-authoritarian form of government is a fully horizontal, Anarchist structure. Grouping all governments together as “fascist” is just a smokescreen in front of the quantitative and qualitative differenced between forms of government, which are often extreme, as they have historically been between Marxists and fascists.