Another way to confront such Hitler rhetoric is to contrast it with opposed analogies from the same period. Say, let's compare the fake border incident that started the war on Poland with the lies to start the war on Iraq, or compare rhetoric about saving the world from evil bogeyman Stalin to that about Saddam, or compare the Nazis' method to 'fight' partisans by punishing the population to US practice in Fallujah and elsewhere...

_{*Lunatic*, n.
One whose delusions are out of fashion.}