There is consensus among psychologists that the media treatment of mass shooters (particularly those of school shootings) are encouraged by the broad nation-wide round-the-clock coverage of their actions, which provides them the attention and validation that drive them to the act to begin with.
http://www.youtube.com/watch?feature=player_embedded&v=PezlFNTGWv4
In the past and continuing on to the present, the FCC has levied fines against media organizations for broadcasting content that was deemed to be harmful to viewers in some way. There is provable harm in the treatment of mass shootings, and no agreement between news organizations is likely to change the way these events are covered.
Coverage of mass shootings by the media should be regulated by the FCC to prevent further incidents