I also think in this case that the media in the US is afraid of its own history. During Vietnam media outlets were often accused of using footage like this to "spin" the coverage of the war in a particular direction. And with Fox News standing ready (too ready according to some) to call other outlets to task, I think they're afraid of that possibility. We may have a two-party system (something I think is a major failing of the American political system as it's evolved over the years), but we now have something close to a multi-polar media network. And I don't think they know how to handle it....