LOL, cute idea, but you're presuming that the Left would listen or learn or ever do anything to reverse their programming.
Oh, the Left is hopeless. I wouldn’t talk to them about anything.
But there are a lot of normal people who don’t watch the news much, don’t know history, and aren’t terribly political. I think those people should be told that Hitler was left-wing. Just like our Democrats. Spell out all the similarities, beginning with the murder of political opponents. A lot of people are ignorant and they need waking up.