Good news has no legs

Recent headlines from Iraq have focused on the many car bombings that have taken place. It seems there is nothing good at all going on in Iraq. Today's news is that the Iraqis were chanting "Down with USA" while dancing around a charred body, evoking images of the incident in Fallujah earlier this year. Yet this story, about Iraqi troops saving a US Marine's life, gets no attention whatsoever from the media. What more evidence do we need of the constant negative bias of the media? How are we, as Americans, supposed to make intelligent decisions about who should lead us in the war on terror when all the media gives us is bad news?

Is there no one in the major media with any principles at all?