Dug up this old piece on Reddit, it's Marilyn Manson's commentary on the Columbine shooting (wait, wait, bear with me here); I think it's actually very insightful and well-articulated. It's a bit of a read, but it's definitely worth the time.
http://www.rollingstone.com/culture/news/columbine-whose-fault-is-it-19990624---
Also, two snippets that popped up on my Facebook feed that are more directly related to the Sandy Hook tragedy.
"Events like this, if they are influenced by anything, are influenced by news programs like your own. When an unbalanced kid walks into a school and starts shooting, it becomes a major media event. Cable news drops ordinary programming and goes around the clock with it. The story is assigned a logo and a theme song; these two kids were packaged as the Trench Coat Mafia. The message is clear to other disturbed kids around the country: if I shoot up my school, I can be famous. The TV will talk about nothing else but me. Experts will try to figure out what I was thinking. The kids and teachers at school will see they shouldn't have messed with me. I'll go out in a blaze of glory."
-Roger Ebert
"We've had 20 years of mass murders, throughout which I have repeatedly told CNN and our other media, if you don't want to propagate more mass murders:
1. Don't start the story with sirens blaring.
2. Don't have photographs of the killer.
3. Don't make this 24-7 coverage.
4. Do everything you can not to make the body count the lead story, not to make the killer some kind of anti-hero.
5. Do localize this story to the affected community and make it as boring as possible in every other market.
Because every time we have intense saturation coverage of a mass murder we can expect to see one or two more within a week."
-Dr. Park Dietz