Yep. And the most prominent fascist power that wasn't overthrown externally (Francoist Spain) lasted 40 years until it's demogogue died. The reason it wasn't a bigger problem for the world at large was that it was a politically isolated minor power.
The world hasn't yet seen something like an (openly) fascist modern USA.
DS9 has always had edge. It's among the great works of Anti-Fascist media. Given the course history has taken since it aired, the show has aged like fine wine.