"The Monsters Are Due on Maple Street"
At the end of the episode, Rod Serling says this: "The tools of conquest do not necessarily come with bombs and explosions and fallout. There are weapons that are simply thoughts, attitudes, prejudices to be found only in the minds of men. For the record: Prejudices can kill, and suspicion can destroy, and a thoughtless frightened search for a scapegoat has a fallout all of its own -- for the children, and the children yet unborn. And the pity of it is that these things cannot be confined to the twilight zone."