You really don't know diddly squat about world politics, do you. <(That's declarative. It's only worded in the interrogatory.)
The USSR was never "Socialist". It was "Communist", and ruled by dictators by any other name_period_full stop. They went through the pretense of calling it "Socialist", which it was in name only.
Stalin was the person responsible for only "god" knows how many millions of Russians killed after WWII. Many of those killed by him were soldiers returning from the front, under the auspices that they might have aided and abetted the enemy. (Which BTW, was Germany.). In other words, traitors.
As I said, the Scandinavian countries are,
"Social Democracies"** Look it up. The Norwegians are purported to be the happiest people in the world. BTW, Norway is a "kingdom", with a real king, and not some braying jacka** who imagines himself a king, as we do here in the US.
Here's the story of "Operation Barbarossa". If you have the attention span to listen through until the end, you'll note that the soldier/narrator, winds up in a concentration camp facing death.
** What's the matter, can't you read?