a person is reasonable, people are dumb panicky animals
It applies well in the movie it was written for, in the context of extraterrestrial life existing as fugitives on earth, but there are of course other circumstances where a person can be a dumb panicky animal and a group of people can be reasonable.
I have a petty thing about a movie that I have spoken about but nobody seems to share my anguish. It's the famous "You eat pieces of shit for breakfast?" zinger from Happy Gilmore, my mind is locked on the fact that Adam Sandler literally wrote the script, he made him say that dumb line so his character could respond in such a way.