“..Many supported the Axis until Stalin sent provocateurs behind the lines...”
I’ve read that too.
Especially in Ukraine, where the SS Einzsatzgruppen came in after the initial Wermacht troops left and started slaughtering village after village.
Plenty of Ukrainians collaborated with the Einsatzgruppen in murdering local Jewish populations; public opinion turned against the Germans when reprisal killings (for Germans killed) took a toll on Ukrainian Christians.
Ten years before the war started, Stalin had already killed more people in Ukraine than the number of Jewish people Hitler murdered later. Both were very evil men.
The story of pink fluffy Wermacht and mean evil SS is a myth. Just like most of that was taught in the West about Eastern Front. The reason is that the Germans wrote about it and they sure wanted to whitewash themselves.
Although the movie took place in Belarus, the movie "Come and See" was the most graphic depiction of what the Nazis did in Russia.