I've long felt that, as a whole, the media was biased towards sensationalism, not liberalism. The media needs to drive people towards them, and by blowing up non-stories out of proportion, many of them drive readership / viewer-ship. This is not an absolute blanket statement, of course - there are outfits, such as the New York Times, that for the most part care about getting it right rather than generating a story for the sake of generating a story. And, we all know about Faux News hides behind the "fair and balanced" slogan while being anything but fair and not at all balanced. Opinion writers and commentators do seem to be more free to call it like it is, but as a whole, the media does seem to be in the business of generating a story for the sake of having a story.
I'm writing this, and what's below the fold, mostly as a way in which to consolidate some thoughts and lines of evidence to use in debates against conservatives who take it as established fact that the media is in fact a big liberal conspiracy. I have actually seen some conservatives claim that the liberal media is covering up some aspects of the Park51 Lower Manhattan Community Center Project story, which is alternatively sad and amusing for the complete lack of proof for their opinions.