Fact #2 from this link;
https://www.mentalfloss.com/article/...er-movie-facts
"Carpenter has described They Live as a “primal scream against Reaganomics,” a story that uses a science fiction concept to pour on social commentary about the way he saw what was happening to the American middle class in the 1980s. In a 1988 interview with Starlog promoting the film’s release, Carpenter noted that he’d begun watching television more frequently while developing the story, and realized “it’s all about wanting us to buy something,” which further influenced his take on the material.
“I wanted to strike out in some way, so I cast the Republicans as alien creatures,” Carpenter later recalled.
Even years later, Carpenter continues to believe in the relevance of the rich-get-richer conspiracy at the heart of the film. "They’re still here, making more money than ever, and they’re still among us,” he said."