Technically, this is off-topic, but it's seems relevent.
In the late 80's, a friend of mine who is a sociologist was carrying out research into juvenile delinquency. Her work at that time dealt mainly with one group of teenagers who made a living by stealing turbo-charged cars and scraping them for spare parts.
One of the local TV stations got wind of it and asked the gang for an interview. They agreed and somewhat reluctantly, my friend also agreed to be interviewed ( simply to be on hand if one of the reporters tried to incite one of the gang members to steal a car on camera ).
To cut a long story short, when the story appeared it was totally biased. It was sensationalised to the max and the section of the interview with my friend was deliberatly cut and edited to place the most sensational angle on my friends work ( sociologist's don't enforce the law - that isn't their job. They are supposed to find out what is really happening in society and that requires that they maintain an uncompromising neutrality. Otherwise, people won't tell them what they need to know ).
That incident taught me a lot about the bias of the mainstream media, and since then I have had other fairly direct and personal experiences that have simply re-enforced that impression.
As I said, this was technically off-topic but it is a personel experience of mine and I tend to value the things that I have learn't from personal experience more that I value the words that I have read in any book.
You might be strangling my chicken, but you don't want to know what I'm doing to your hampster.