Softens up the populace - when it goes down in the neighborhood: "must be one of them(gunlovers, patriots, tax evaders, home-schoolers, christians, freepers, etc., nothin' to see here, close the door and turn off the lights."
They do not know which terminal it was found in, or whether it was a men's or women's restroom...A passenger found the gun, and promptly turned it into authorities.
Perhaps the gender of the "passenger" could be a clue.
Detective Colombo they aint.
IMHO, if I were a betting "person", I'd say womens room since they claimed (PC) ignorance.
"If we are seemingly indifferent to human rights violations happening in a neighbouring country, what is to stop us one day being indifferent to that in our own?"