I would suggest instead of arguing on the internet, going and reading letters, diaries, etc. from people who were living through WWII which would give some pers

I would suggest instead of arguing on the internet, going and reading letters, diaries, etc. from people who were living through WWII which would give some perspective on what fascists were like, what the propaganda was like, etc. "I know you are but what am I" was a very fundamental and common propaganda line of the fascists then, and there were good reasons at the time to not dismiss it entirely. I've been reading George Orwell's letters recently along those lines, where he grappled with British imperialism and why it was necessary to fight the Nazis. It has never been any more easy and obvious at the time to determine the bad guys than now. Oh, by the way, Orwell himself spent some time being a propagandist for the British.