https://www.unqualified-reservations.org/2008/05/ol3-jacobite-history-of-world/

So the pendulum was a long, long way from top dead center. But the system still had a crude mechanism by which it could be brutally yanked back: street violence. Hitler and Mussolini came to power partly by good old democratic politics, and partly by using their thugs to intimidate their political opponents. This would not have been possible without a security system which tolerated this sort of behavior. When the SA had street fights with the Communists, the SA men tended to get off and the Communists get long jail sentences.

Note how much effort post-1945 governments invest in making sure this particular horse does not escape from this particular barn. There is zero official tolerance for right-wing political violence in any Western country today. (There is a good bit of tolerance for left-wing violence, notably the European antifas, who are the real heirs of Ernst Röhm.) Classical fascism simply does not work without a hefty supply of judges who are willing to “let boys be boys.”

The Western judicial systems today cannot be described as reactionary in any way, shape or form. Thus, if you are a progressive, you can cross fascism—at least, good old 1930s-style fascism—off your list of worries. And if you are a reactionary, you can cross it off your list of tricks to try. Considering the results of the 1930s, I have to regard this as a good thing.