IanEye's post reminded me of the extracurricular campaign the CIA waged (on personal time!) against the author of an expose on Ringling Bros., which the search button tells me has *never* come up here at RI! Which I'm convinced is wrong, b/c I'm sure someone posted about it... unless that was just me confusing Daniel Hopsicker w/ RI (time to head to the data dump to archive this).
Salon: The Greatest Vendetta on Earth
Wired: Ringling Bros. CIA Spy Heads To Court which is just a link to Spy Talk
The point being that, of course, well-funded and well-connected private orgs. do in fact harass private persons who make their dirty laundry public.