In many countries there were extremists, either pro-nazi, either pro-soviet and those joined accordingly.
Darun, here we've got basic distinction between pro-Soviets and pro-nazi speaking in general terms. Whatever underlay the WW2, whether it was M-R pact or something else one thing under no circumstance can be overlooked. The Soviets were nominally a victims, they defended, thereby obviously not all who go in your book as pro-soviets were extremists/criminals whereas all pro-nazi were (more or less). My grandpa who made shells for Soviet army under constant bombing. Was he pro-soviet? Kind of. He did his best to help his Rodzina (the SU) at hard times. Was he a criminal? Hell no. My uncle died in Belorussia aged 18 defending his homeland, the SU. Was he an extremist? Negative. Same actually goes I believe for the most of Soviet soldiers who defended their lands with a sad exception of few.
From your answer, it seems that you are trying to justify an invasion by the acts that followed from the invaded part, to justify the cause through pointing at the results.
Am I right in that you solely blame the SU for that all poor lambs joined the SS and Wermacht for the only reason of Soviet oppression? Romanian, Austrian soldiers along with German ones under Stalingrad... were they oppressed too? They simply thought the fascist would win and they would be able to share the pie. They were wrong. Although I don't like the price we paid to prove them wrong.
Am I right in that you find the response appropriate and well-deserved when Croatian ustashi killed Serbs or when UPA exterminated any disloyal civilians including Ukrainians, when finally Latvian SS burn alive Russian women/ kids and Polish POWs? You're now perking your finger in Russian bear who is on its slow and uneasy way of guilt's admission marvelously ignoring the snake within easy reach who has never felt guilty. What is that? Is that kind of self-castigation or what? If someone stole your property would that be a sufficient excuse for you to go on killing spree?
You were right many peoples collaborated with Nazi but there's always a tangible distinction between victims and criminals? So where those Baltic fascists brought to books? They're on the picture above doing alright. Where the information about them to learn? The best one can find in English wiki is precisely nothing.
Long story short... double standards that's what I actually don't like. I'm not interested in what they say as long as they honour fascist cutthroats.