Please don't list this on a work's page as a trope. Examples can go on the work's YMMV tab.
Nightmare Fuel: The Republic
Didn't expect to see it here, huh? Well, in Book 2, Glaucon uses the story of Gyges's ring to make a point. He explains to Socrates that the ring would allow its user to turn invisible(a rather familiar concept). The user, independent of whether they are just or unjust, would inevitably abuse its power. They would steal from, kill, or RAPE whomever they wished.