Showtime’s docu-series The Fourth Estate is catnip for political news junkies

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“It just never stops,” says one person. “It’s such crazypants bullshit,” another opines. A third sums up something anyone in this country could’ve said in the past year, when it comes to following the current vein of politics in America: “You get tired of saying ‘holy shit,’ because you’d be saying it every three…