Actually, I know something about the brutalist movement because my closest colleague is married to a French architect (who hates brutalism which had a long and inglorious run in her homeland): it was indeed foisted on the world by leftists, not to glorify regimentation of socialism, fascism or communism, but in the spirit of Lenin’s “the worse the better” to make capitalism more oppressive by housing workers in oppressive buildings. They *knew* the stuff they were designing was ugly, indeed when they succeeded in their intent, inhumanly ugly, and wanted it that way.
That further cements in my mind that the adherents of communism are either complete idiots or absolutely evil.