One of the great intellectual errors I’ve had to clear myself of in recent years was the belief that Nazism and Communism, Fascism and Bolshevism, were opposites. I’d been taught that the former was the extreme Right, while the latter was the extreme Left.
This is wrong. Both are creations of the Left, ideologies that place the State above the individual and loath free-market capitalism. Jonah Goldberg does a wonderful job explaining that in his Liberal Fascism. But, if you haven’t time to read that (1), this video from Conservative MEP Dan Hannan gives a good quick summary of why, for all their differences, at their core Nazism and Communism were very much alike.
(1) Do yourself a favor and make the time. This book is worth it.