It’s been noticed that if the media reports on something that you know a lot about, you find that they usually get it completely wrong. Most folks who notice this will then turn around and act as though the media will not be completely wrong about whatever else they are writing about.

I’m stealing this from Gell-Mann amnesia effect :

In a speech in 2002, Crichton coined the term Gell-Mann amnesia effect. He used this term to describe the phenomenon of experts believing news articles on topics outside of their fields of expertise, even after acknowledging that articles written in the same publication that are within the experts’ fields of expertise are error-ridden and full of misunderstanding.

In other words, if they are proven wrong whenever you can check them, why would you trust them any other time?

Not to mention that they’re usually lying sacks of stuff anyway.