They Live

Aimless drifter John Nada finds work as a construction worker in Los Angeles, where a wide gulf separates the upper classes from the working classes. After donning a pair of special sunglasses, Nada discovers that many of society's elite are not humans, but aliens who control humanity through subliminal messages. Now he's the only one who can save the Earth from these villainous invaders. (official distributor synopsis)