The Twilight Zone, created by Rod Serling for CBS, is the most influential anthology series in television history. Each episode dropped ordinary Americans into extraordinary situations — parallel dimensions, time travel, alien contact, supernatural justice — and used genre conventions as a vehicle for social commentary on conformity, prejudice, nuclear anxiety, and the human capacity for cruelty. Serling used science fiction and fantasy to smuggle ideas past network censors who would have rejected them in realistic dramas. Episodes like 'The Monsters Are Due on Maple Street,' 'Eye of the Beholder,' and 'It's a Good Life' have entered the permanent vocabulary of American culture.

Reference:

Wikipedia: The Twilight Zone

https://en.wikipedia.org/wiki/The_Twilight_Zone_(1959_TV_series)