They don't necessarily have to be leftist or about leftist history, but preferably things without Western/Imperialist white-washing. I'm usually hesitant to go looking for history docs in the main stream (netflix, hulu, etc) since they're just propaganda half the time. I have a big interest in civilizations and sociology. Thanks chapos
Soviet Storm: WW2 in the East
It's russian made and thus pretty truthful take on the eastern front in a way that is never covered in documentaries about WW2. They don't shy away from the fuck-ups either.