Fascism and its leftist history.

“fascism, properly understood, is not a phenomenon of the right at all. Instead, it is, and always has been, a phenomenon of the left. This fact—an inconvenient truth if there ever was one—is obscured in our time by the equally mistaken belief that fascism and communism are opposites. In reality, they are closely related, historical competitors for the same constituents, seeking to dominate and control the same social space.” 

― Jonah Goldberg, Liberal Fascism: The Secret History of the American Left from Mussolini to the Politics of Meaning