Two different circumstances. The American media nor g'ment had any control over the per se distribution of footage of the men ambushed in Fallujah...
That's simply incorrect. And while I understand the points you're raising, and even agree with a few of them, you aren't going to reasonably argue that the American government has control over what the media says and does, are you?
What Americans saw from Fallujah was determined by their news source. The New York Times ran on its front page The Associated Press (AP) photo (Contractors Hanging on Bridge) in color, which included the clearly visible bodies with celebrating Iraqis in the foreground. Times’s executive editor, Bill Keller, said of this decision: “You can’t shy away from the news..."
...The Washington Post ran a cropped version on page A11 of the Ali Jasim (Reuters) photo with a smiling boy in the foreground. Len Downie, the paper’s executive editor, stated: “We owed readers photographic as well as print reporting about what took place..."
...The Palm Beach Post ran the AP photo (Contractors Hanging on Bridge) on its front page. John Bartosek, the paper’s managing editor, claimed, “We selected that photograph, after a lot of thought and discussion, because it’s a powerful news image of a dramatic, horrific and brutal day in Iraq.”
http://www.nieman.harvard.edu/reportsitem.aspx?id=100834