Dozens. From the USSR (go ahead and count all the nations that splintered off it) to East Germany to Cambodia to Venezuela to Ethiopia to the Congo to Somalia to Zimbabwe to Argentina. The list goes on and on. Essentially everywhere it has ever been tried. It's not a redneck exaggeration.
Then there are the states that survive if you want to consider that a success: North Korea and Cuba come to mind. Countries that imprison their own citizens. I think the first speaks for itself, and remains the perfect test condition imaginable between socialism and capitalism; you had the same people, the same land within the same region, the same time period in history, etc, and look at South Korean metrics vs. North Korean metrics for economic and social well-being. Per the latter, not sure how old you are, but the case of Elian Gonzalez gripped the nation when I was in school during Clinton's second term:
https://en.wikipedia.org/wiki/Elián_González
When people are trying to cross hundreds of miles of open sea on an inflatable inner tube just for the chance to be an illegal immigrant (or claim asylum)...I think you can tell how well things are really going.
Take a look at Vietnam. They have maintained their hard-nosed communist defiance. The enjoy a glorious 159th place in terms of GDP per capita, globally. Laos is right behind them. Why do you think we have so many Hmong immigrants to this day in the USA who are eager to trim marijuana on the black market (the shit end of that industry's stick) just to have work? Unbelievably industrious people. Only a system as functionally retarded as communism (or monarchy) could hold them back.
Remember Gaddafi in Libya? He was a socialist. Things are going great over there, I hear.
China is probably the most successful "Marxist-Leninist" country ever, and that's because in many ways it isn't a socialist economy, but that's how it started, and look where that has landed them in terms of civil freedoms. They have a state-run media. They have a President-for-life. They have
concentration internment camps. They have artists, scientists, and even international police organization executives who disappear without a word. They have an intranet, not an internet. They have ghost cities. They have everyday air quality that is worse than the worst single days on record here, locally, in California this past summer, when we experienced the worst wildfires in our history. All that they've paid, and they haven't purchased true freedom.
Take a look at Estonia. Look at how that country governs itself. Look at how they treat any threat of return of socialism following what the Reds did to them. It's enlightening.
