Carly Mallenbaum

USA TODAY

Louis C.K. is another funny famous face (along with John Oliver) speaking out about Donald Trump. The comedian turned an email promoting a new episode of his Web seriesHorace and Pete on Saturday into a diatribe about Trump, starting with a comparison of the GOP presidential candidate and Adolf Hitler.

"Please stop it with voting for Trump. It was funny for a little while. But the guy is Hitler. And by that I mean that we are being Germany in the 30s," he writes after the P.S. of his email about episode 6 of his show.

The expletive-laden postscript message went on to say that he's not endorsing a Democrat. In fact, he'd like a conservative to "face the liberal candidate" and let the country choose which nominee is more worthy.

"I'm not advocating for Hillary (Clinton) or Bernie (Sanders). I like them both but frankly I wish the next president was a conservative only because we had Obama for eight years and we need balance... Please pick someone else. Like John Kasich."

But that conservative candidate should definitely not be Trump, according to C.K., who calls Trump "an insane bigot," for reasons including the fact that Trump "said he would expand libel laws to sue anyone who 'writes a negative hit piece' about him." Trump "is playing you," C.K. adds.

"In fact, if you do vote for Trump, at least look at him very carefully first... I don’t mean listen to me or listen to liberals who put him down. Listen to your own people. Listen to John McCain. Go look at what he just said about Trump," he writes.

And to drive the point home, he continues:

"That's how Hitler got there. He was voted into power by a fatigued nation and when he got inside, he did all his Hitler things and no one could stop him."

He closes the over-1,400-word postscript by saying that he knows his note sounds like a celebrity being preachy about his political opinion, but that's not what he's trying for. "Trump has nothing to do with politics or ideology," he says, defending his right to write.

"I know I’m not qualified or particularly educated and I'm not right instead of you. I’m an idiot and I'm sure a bunch of you are very annoyed by this... I swear this isn’t really a political opinion."

He closes the piece with this: