It’s not too much of a stretch for TOS to be construed as fascist. It’s a human-chauvinist show that, despite the claims that the Federation is peaceful, winds up kicking ass everywhere they go. The Federation being an all-controlling, powerful entity that dictates the actions of its citizens and military/exploration arm. Pretty authoritarian on the surface.

Believe it or not, fascism isn’t inherently anti-progressive. You’re just forced to conform to that government’s brand of progressiveness.