It was a short story, based on the premise that Marxism actually worked and set in an alternate, mirror-universe end of the Cold War (so it was written in the 1990s*). It got anthologized, so it was mainstream; and I thought that I knew the title (“Dispatches from the Revolution”), but that’s an entirely different short story.
Help? This is driving me nuts.
*It held up NYC as NOT being a hellhole (specifically because the City was more socialist than the alternate’s USA), so the story clearly predates Rudy Giulani’s tenure as Mayor (and subsequent repair) of the City.