The Washington Post recently carried a column by Mark Feldstein concerning the issue of biographers whose mission, far from hagiography, is “pathography” — that is, a dedication to digging up dirt, as the term’s originator, Joyce Carol Oates, suggested.
I think the story here is the publication of salacious charges based upon a rather thin foundation of evidence. If a biographer’s mission is to explain someone and what made them who they were, everything’s fair game, so long as it’s being addressed fairly, with the additional obligation to answer the “so what?” and “who cares?” questions. But you may feel differently.
Crossroads 
muckrakers….
(I’ve waited a long time to be able to use that term in context)
I’ll see your muckrakers and raise you a yellow journalist.
I note that Mr. Feldstein did not pass up an opportunity to stick pins of his own in Nixon, while ‘defending’ him.