What Trek episodes/movies are completely classified to the general public in the universe of Trek? What have we (the audience) been privy to that the regular Federation citizen would have no clue about? For instance… DS9‘s In the Pale Moonlight… but since DS9 took place partly in war time I suppose loads of that was classified. The episode with the Guardian of Forever, that had to be classified. An ambassador traveling back in time… What events seen or unseen would be super secret?! 
