If you're doing it right as a writer, you're channeling the societal gestalt and the world in general in which you live both locally and globally. At this moment in time, you're observing the situations taking place societally, politically, culturally, internally, and also exploring the past as things become apparent to you. Movies and TV are reflections of our world but they also serve to show us truths from the past that cause us to explore further.
This is all to say that what you think is some sort of Hollywood conspiracy is just the hard, cold facts that there are a lot of writers out there processing the same information as you - and then they are writing that information into articles, scripts, novels, etc. You shouldn't be surprised if more than one person has your idea and has written it.
But you also never capitulate to those "thieves."