Hollywood makes those kinds of movies to put the idea into people's heads to rebel.
Why do you think last year American Horror Story came out with this: https://www.youtube.com/watch?v=6yNRjCIlmgE
They made this about a MAGA supporter who became cult like, in the end he dies. The opening scene in the pilot was about the 2016 election and how bad the Country was going to be under Trump.
Think of all the Purge movies. Not only do they show what DS wanted for the future of our govt. It also showed people being allowed to riot and rebel.
And then of course, speaking as someone who has watched the Handmaid's Tale, they cleverly package it as a foreboding tale of strict conservatism gone ugly. But if you think about their end game, you realize it's more likely they were using it to show the people what the world would be like under (((their))) rule.
Make another 50+ movies and TV shows like that, and you plant the seeds.
And if you don't make a movie that fits the agenda or is too revealing…you get shunned (Mel Gibson), or killed (Kubrik).