Ever read mainstream news reporting about a topic you were very familiar with? Perhaps something related to technology, or a local issue you were in the middle of?
Most people have had that experience. The more you know about something, the less the story seems to be accurate.
Yeah, all the rest of the news stories are about that accurate also, people just mostly don't notice.
Think about it.... it's mostly some j-school grad who asked a couple people some questions to get quotes, then threw the "story" together. Usually they're lucky if they understood what they were told, let alone can explain it in a manner which actually enlightens their audience.
My best luck as been with subject matter experts who blog on news topics related to their subject. So I get my economics news and analysis from economics professors (not the pet ones in the NY Times), my legal news from law professors and judges who blog, my technical news from a technical site focused on that part of the industry, etc...
Even then you have to be willing to read multiple viewpoints to try and see a bigger picture than one voice is going to paint for you.