Ok, I have just watched DS9, S2:E15 Paradise. And it is, thus far, the singularly most disturbing Star Trek episode I have EVER seen... EVER!
What, the actual, Eff?
Synopsis: A cult leader essential kidnaps a ship full of people, intentionally crash-lands on an uninhabited planet and builds "Paradise" in her image.
Enter Sisko and O'Brien who beam down to the surface to find out why this planet has life on it.
Loony Bin Cult Leader then proceeds to sent the Federation shuttle off into space stranding Ben and Miles with the Convert or Die cultists.
By the end of the episode it's revealed that the Cult leader has been using some bits of the initial shuttle to jam any type of communication with the outside world. The Cult members are SHOWN all this as the reason for taking the Crazy Broad In Charge back to the Federation for prosecution, and they DECIDE TO STAY ANYWAY!!! In spite of being lied to for TEN YEARS??? In spite of having their fellow cultists die when they could have been saved?
And NONE of this is presented (at least from my point of view) as cautionary tale, rather the sad lot seem content to continue the fraud.