We've missed the obvious by not seeing the forest for the trees:
Señor Hitler is in fact a Democrat mole, tasked with destroying the Republican Party. And at that he's good at what he does. All of his behavior and comments are eminently explicable in this scenario.
Otherwise one would have to believe he's the stupidest, most inept person on Earth ... and nobody is that stupid or inept.
An ancillary benefit is that the crazies who support him have been uncloaked and can be neutralized (or, better, neutered).
Remember: You read it here first!