I mean, I'd argue Finland should have no been there. Sure, the Nazi's would have probably taken their place, but it's better than having your country associated with such a horrendous siege.

And yes, there is plenty of Nazi "taint" to go around that was pretty quickly forgotten/forgiven after WW2. The Russians are definitely the big ones, but also the Finns, the Hungarians, the Romanians, and of course the Italians.