The Balts actually slaughtered their own Jewish populations before the Germans even passed through.
There were some villages in Lithuania where this is reported to have happened, but it wasn't the general picture, which was more one of an unusually high level of local co-operation in the murders ('unusually high' still does not mean 'everyone').* But there were also people (in all Baltic states) who tried to save their Jewish neighbours, and not a tiny number were killed themselves as a result. There
is an issue with what we might euphemistically refer to as 'problematic historical remembrance' in the Baltic states regarding the War and the Holocaust, but that's not an issue unique to them or even to Eastern Europe. Consider Austria or even France.
In any case I don't think the vile actions of
some of their grandparents justifies a (hypothetical) Russian invasion today...
*Or was it 'typically high once you ignore Poland?' Depends how you choose to look at things.