Point taken. Many if not most journalists (or if you prefer, propagandists) object strenuously if they are accused of a liberal bias. And, to be fair, I don't believe they are lying.; they really and truly believe that they are mainstream, and middle of the road. And they are--for the Upper West Side of Manhattan. They surround themselves with like-minded people, who think like they do and they honestly think that except for what they think of as 'fly-over' country, the vast majority of Americans share their political outlook. So, what we hicks in Oklahoma, Kansas, Wyoming, the Dakotas or the deep South think doesn't really matter.
News media people don't call each other up in the morning after a major news story breaks, and conspire against us. They don't think among themselves 'now, how can we make Republicans, evangelical Christians, gun-owners, corporate executives (other than media, of course) or any other groups look bad. It is not a conspiracy, per se. Rather, it is nothing more than groupthink. It is a refusal to think outside of the box. The folks of the MSM think that they are mainstream because in their social circles, they are mainstream. And since at least 75% of the domestic news stories are generated from bastions of liberal power, New York, Washington, DC, Los Angeles, and Chicago, what is mainstream for them, is they think, mainstream for everyone. Unless of course, you are a conservative, then you are an extremist. What liberal ideology says is so, must be so and they want to be thought of people who make a difference. And if you don't agree with them, they look down their noses at you much as Charlie Gibson did with Sarah Palin.
In short, they think of us as a bunch of hicks, not as sophisticated as they are.
Exactly what Bernie Goldberg wrote in "Bias." He tried to get Dan Rather and others to understand that because they all thought the same thing, that they considered themselves to be "middle of the road." He couldn't get them to understand that they were more liberal than they thought they were.
Someone ought to make them all sit down and take one of those tests that rate one's political philosophy based on their answers to questions.