Looking for a short story that takes place after the apocalypse/societal breakdown? Can’t remember much else about it except for the final scene. The protagonists find that the statues in the park/square? have had their heads removed and replaced with the carved heads of insects. I think they are being pursued as well.
This is Alfred Bester's "They Don't Make Life Like They Used To"
...directed her gaze at the Wonderland monument...
A consummate craftsman had removed the heads of Alice, the Mad Hatter, and the March Hare, and replaced them with towering mantis heads, all saber mandibles, antenna, and faceted eyes.
The story takes place in New York City, and the reference is to the famous Alice In Wonderland monument in Central Park.
(photo from centralpark.com)
Possibly Missile Gap by Charles Stross (available online). A Rushmore-style monument gets an insect head.