Why are liberal Democrats so angry, spiteful, and obnoxious? Because they live in an identity created for them, to control them. Its like placing mustard in a ketchup bottle. They occasionally realize its wrong, but their anxiety and fear of consequences prevents them from acting against their pre-packaged identity. Instead, they attack free thinking people and accuse them of thought crimes.
Once upon a time, writers and directors personal lives and professional lives were separate. Now they feel its necessary to tell you their political ideologies every 30 seconds in their work. That is the big difference in film from the past vs today.