My grandpa is a super-commie and also super versed in history (he even used to be a history teacher in his younger years). He'll justify any actions taken by Stalin bringing every historical source that portrays the guy in a good light and ignoring these that criticise him. I prefer to just politely nod 'cause I know arguing with him would be a waste of time. Also, he's almost deaf so if you wanna tell him something you have to shout it directly in his ears which gets pretty tiresome pretty quickly
