By broadcasting the video that the deranged student recorded, the news media is only encouraging copycats. The gunman himself referred to the Columbine killers, no doubt because of their video messages.
Brooke Gladstone of NPR's On The Media said today that airing the videos was the only thing news outlets could do. I disagree. The graphic and offensive images are not providing any new information and only serve to encourage others to follow suit.
Al Jazeera has an online poll. Take it and see what their readers think.