I'd be happy if the Newtown atrocity gets the news media to rethink the whole marketing model of the 24-hour news cycle. Going out in a sunburst of notoriety, thanks to an ever-on news machine waiting for fodder, must have attractions for some of these shooters. Remember how NBC obliged the Virginia Tech killer by airing his videotaped rant for him? The graph I posted previously tracks with the rise of 24 hours news programming.
How to prevent future mass shootings? I don't know. Simply wishing away guns and mental illness won't do it. But ceasing to make these killers international celebrities seems to be a good, achievable start.