The Left opposed the king and they opposed the clergy.
I look at the Left today and my primary observation is that the Left opposes Christianity. All else that the Left supports, flows from this primary fact. Therefore, I say that the Left of 2014 is largely the same as the Left of 1789.
One can claim that Fascists of the WWII era voiced support for the Church, but their actions generally did not follow their words. Much of the anti-Nazi movement in Germany was based in Christian opposition. The Pope did not support either Mussolini or Hitler, though people who oppose the Church like to disparage the Pius and claim he did.
The Left is all about secularization and the growth of State Power over individual power. I have a hard time seeing Fascism as anything other than this.
Check out the Concordat the Vatican signed with Nazi Germany in 1933.
Your observations are those of an American conservative. But the "right" began in Europe and the European right is at once statist (even totalitarian) and anti-Communist. In fact, European rightists see American-style individualism and classical liberalism as leading to Communism. The fact that this makes no sense in the American political spectrum doesn't mean that it makes no sense elsewhere.
You'll never understand this until you learn to step outside your own head.