Game: Krasnacht, a mod for Hearts of Iron 4
Post title: New Ideology idea: Situationism. Born out of the ashes of the Second Weltkrieg, this semi-anarchist movement of avant-garde artists believes in socialist art as the only road to victory against the Bourgeois & Reactionary nations known as "The Spectacle"
Pretty sure this isn't even canon, just a post made on the subreddit. Even then, Krasnacht is one of the few HoI4 mods that isn't shitlib (and represents leftist ideologies somewhat well), so I'll give it a pass.