Washington — Con artists have always been slithering around.

Huckleberry Finn tangled with flimflam men on Mississippi riverboats. There was a flirty snake oil salesman in “Oklahoma!” And Marian the Librarian fell in love with a charming charlatan, Professor Harold Hill, in “The Music Man.”

It was all part of an amusing American tradition of rapscallions doing their little side hustles.

But now narcissistic con artists are dominating the main stage, soaring to great heights and spectacularly exploding.

We have one running amok in the Oval.

And we have one who finally turned himself in at a TriBeCa police station on Friday. “Shakespeare in Love” was good. But Harvey in handcuffs was great. Harvey Weinstein spent many years prosecuting his nefarious schemes against women before women ensured his prosecution.

Elizabeth Holmes shot to fame as the youngest female self-made billionaire after she dropped out of Stanford at 19 and then founded the company that became Theranos. She claimed to have created an easier, cheaper way to do blood tests, just by pricking a finger, but then it turned out she was a literal bloodsucker, defrauding investors of $700 million on a nonexistent technology.