Seeing past the "entertainment" and recognizing the propaganda - Look at us go!
People are waking up (finally).
You have to admit, this one's pathetically easy.
Dig into the history of WWII Japan especially the Pearl Harbour story. Enough "funding both sides" and "wartime profiteering" to make you pee your pants. Almost as bad as the "European Theatre".

To kill an enemy, one has to first dehumanize them.

Yeah...this is quite a bit more understandible than the blackface movies made by the KKK. In the town my mother grew up in...there's a book containing statements of inhabitants on why they volunteered to fight in WW2. One resident had written, and I quote" I want to kill Japs. I'd like to kill Germans too...but mostly I want to kill Japs."

That's not even an insult to modern Japanese people. I'd argue it's not necessarily an insult to their grandparents either...although that's more debatable. This is kind of just the sort of mentality that's probably not a bad thing to have when you are at war with another highly dangerous nation.