A very low-budget 1980s film with concerns far more esoteric than your average movie, which wouldn’t be rediscovered until decades later.
An “experimental” horror movie that’s about vampires, sort of, and… other things? What things you ask? I’m not sure.
This tiny indie movie found the right metaphor for basically all of modern society’s fears and single-handedly spawned a major subgenre that’s lasted until today.