The movie is about low-lifes and there's a strong (overwhelming?) anti-consumerism theme, but it's really an alien invasion movie and the only high-tech comes from the aliens. Otherwise, it's a "modern day" scifi.
So what do you think? Do you consider They Live to be cyberpunk?
Here's a clip if you haven't seen the movie: https://www.youtube.com/watch?v=_z9hMartaFc
As far as I can tell, it's only streaming on Starz right now.
I wouldn't call They Live cyberpunk because it doesn't really deal with humanity's relationship with technology as part of the plot.
The sunglasses are a magic technology along with whatever the aliens have. You have a stratified society maintained by technology, but it could effectively be magic.