While the film taps into real fears of the Cold War era, including the threat of nuclear radiation and the unknown dangers of the unknown, it's purely fictional.
Here's why it's not based on real events:
* Giant ants don't exist: The film's premise is based on the fictional concept of giant, mutated ants.
* No documented incidents: There have been no real-life instances of giant ants attacking humans or causing widespread destruction.
* Symbolic allegory: "Them!" is more of a symbolic allegory for the anxieties and fears of the time, rather than a direct portrayal of reality.
It's important to note that the film did contribute to a real phenomenon called "giant ant hysteria," where people reported seeing large ants after the film's release. This highlights the power of fiction to influence real-world perceptions.