Film alegory from 1988 written and directed by John Carpenter. They Live! is about an drifter with no idendity referred to as "Nada". Nada gets involved with a small group of scientists, from whom he gets special sun glasses. Nada discovers, that through these sunglasses he is able to see the hidden truth of manipulating people into spending money, breeding, thinking and acting according to predeterminet programming and accepting the status quo through subliminnal messages in mass media.
Here is a short scene from the movie, where Nada puts on the glasses for the first time and sees the hiden the truth.