Snatchfaced aliens are tricking humans by using a machine to make them look like us. But Piper (who is never given a name in the movie) is the only one who can see them with his sunglasses. No, really.
Supposed to be, according to Carpenter, an example of blind consumerism and republican economics
It was said to have inspired Shepard Fairey's Obey stickers featuring Andre the Giant.
They Live is an attack on consumerist society and capitalism.