Perhaps the white Finn government shouldn’t have slaughtered its own people
Yeah well civil wars are a bitch. It’s difficult to say for sure, but I’m pretty sure if the Reds had won that one, a similar or worse slaughtering would have taken place. At least it happened in every other place where the communists won a civil war.
joined with Hitler, kept Russian people in concentration camps, and participated in the seige of Leningrad.
I have to point out that when USSR first attacked Finland (Winter War), we were not yet allied with Hitler. USSR was actually enacting a secret deal[0] they had made with Hitler about the division of East Europe.
The things you mentioned happened during the Continuation War, for which I think we were rightfully punished.