allegory?
"The tingler exists in every human being, we now know. Look at that tingler, Dave. It's an ugly and dangerous thing-ugly because it's the creation of man's fear; dangerous because... because a frightened man is dangerous.
...
"Fear made that tingler grow from microscopic size to this. We can only hope when it goes back to where it came from, it will also go back to a thing infinitely small, even die, because its creator is dead, all fear gone."
~ Dr Warren Chapin, about 1:06 into the movie
The country had not long before been through the mass paranoia of McCarthyism. The blacklist was still in effect. Could this film, or at least these words, be allegory?