And what socialism does is kill people.
Whether it is National Socialism killing off the Jews to usher in the millenial kingdom, the ideal society, the 1,000 year reich, or Stalinist, Maoist, or Venuzuelan socialism killing off the kulaks or bourgoisie to achieve the same end, socialism kills.
Socialism fails because it does not understand human nature. Scientific materialism has a profoundly unscientific view of both nature and society. Because it does not reflect physical and human nature, socialism cannot work without coercion. And coercion always means violence. The failures must be the fault of saboteurs. The saboteurs must be identified and destroyed.
It is an old joke, and a particularly gruesome one, that Stalin was just one purge away from achieving the perfect society.
Socialism and its cousin radical environmentalism are always just around the corner from achieving a perfect world. There’s just that one last group of people who stand in the way and must be removed to reach the final solution.