If you haven't read Manufacturing Consent, you should. There's a pretty good film doc on it too.

https://archive.org/details/manufacturing_consent

Also, one thing that I think would help is if we stopped pretending that there's any such thing as "neutral." Facts are facts, but acting like there's some kind of reasonable, middle-ground position between climate denial (or whatever other issue) and the actual science/reality isn't doing anyone any favors.