Godzilla (1954) is nuclear trauma reportage, not monster-movie allegory
Honda Ishirō's Gojira opens with a fishing trawler vaporized by an unseen flash at sea. It came out November 1954 — eight months after the Daigo Fukuryū Maru was dusted with Castle Bravo fallout, two months after radio operator Aikichi Kuboyama died of acute radiation syndrome. The timing is not incidental. This is reportage in monster-movie clothing.
Honda's design constraint was precise: if Godzilla were a dinosaur, one cannonball would kill him. If he were equal to an atomic bomb, nobody would know what to do. That's not allegory — Godzilla's physics map onto the bomb's physics. And because Allied censorship of A-bomb imagery had only just ended in 1952, Japanese audiences were finally able to see Hiroshima and Nagasaki footage when Honda staged Tokyo's destruction to rhyme with it directly — charred buildings, scorched skin, hospital wards of wailing children, a Geiger counter ticking over a corpse.
Source claim: Gojira (1954) is nuclear trauma reportage rather than allegory — Honda staged Tokyo's destruction to directly rhyme with Hiroshima and Nagasaki, using a creature whose physics map onto the bomb's.