1945: USSR, Stalin are heroes, fascists are murderers.
1961: the USSR is a hero, Stalin is not very good, fascists are murderers
1985: the USSR is not quite a hero, Stalin is bad, the Nazis are murderers, but there were some good ones among them.
1991: the USSR is not a hero, Stalin is a murderer, the Nazis are not bad, but there were killers among them.
2000: USSR – occupier, Stalin – murderer, Germans – good, and if not for Stalin, there would be no murderers among them.
2007: the USSR is an occupier, and if not for the United States, then we would lose the war. Stalin is a monster, the Germans generally defended themselves.
2021: USSR – started World War II and built concentration camps, the Germans tried to stop him