All through history, the different variants of leftist political philosophy has hated the other adherents to the same philosophy. All saying the same things about each other, that they are the only pure leftist system and the others are not. Liberalism, Marxism, Socialism, Communism and Fascism are all different facets of the same side of the coin and the idea that fascism is placed on the far right within the traditional left - right spectrum is wishful thinking at best or at the worst, an out and out lie. Of course, like most on the left, you could be buying into the delusion, created in the late 40's by the progressive/liberal elites, that fascism is a right wing system.