ButI don't know if it counts as a socialist system but in Soviet Union where you had people working for the state come in, take all your food and leave you to starve to give the food to the party elite, soldiers, people living in cities. And I don't mean some large land owners but small time farmers, any agrarians. The early party really disliked agrarian people and promoted industry and city people over them to punishing degree. Even kolkhozes got a raw deal sometimes where they tried to make as much food as they could and still got so much of it taken away that they suffered. But all of that is fairly early Soviet Russia/Soviet Union times afaik.

But anyway just wanted to note that you could have that unfair situation in socialism but it doesn't describe it well.