Here is video of CNN's Campbell Brown slamming Fox News for their ad asking why other networks - including CNN - "missed the story" - referring to the huge 9/12 March on Washington.
Campbell Brown rightly points out that CNN did cover the story. We even posted video last weekend of a CNN Reporter being shouted down with chants of "Glenn Beck" and "Tell the truth" as she tried to report on the rally. So it is not true that CNN did not cover the story.
But it is true they "missed" the story, because much of their reporting sought to either downplay the seriousness of the event, or characterize those in attendance as fringe people instead of average Americans who are just desperately concerned about their nation.
But as far as coverage, it was not fair to lump CNN in with MSNBC, ABC, and CBS, who did virtually nothing at all to cover the March.