Crooks and Liars has the video from the weekend seminar. Writes David Neiwert about Halperin's claim:

I have to say, Halperin's line that this was “the most disgusting failure in our business since the Iraq war” is a real piece of chutzpah. Because when there was a chance for the media to do something about properly informing the public about the Iraq war, Halperin -- who had the reins of one of the three major network's news operations at the time -- did nothing. The media's coverage of the war, particularly during the critical runup period, was in fact a historic case of misfeasance that has had disastrous consequences for the nation. And Mark Halperin was a major player in that failure.