How is society going to deal with this? Is it a consequence of video games, media, the internet, change in morals, parenting, families, etc.?
Video games, no. Media, no. The internet, no. Change in morals, how you define it depends
. Parenting & families, possibly. Though I don't always see parenting as the issue, teachers, class mates, and even people in the community can easily screw somebody up. If you're bullied for example, it's not difficult to see how one could end up feeling helpless and hating everyone as a result, of course not everybody who's been bullied is necessarily going to be led down a dark path, for example, I was bullied and my record is clean (no drugs, drinking, violence), but everybody's different. What better way to get the dicks who make you feel small every day by splattering their guts all over the cafeteria walls? Sure there may be collateral, but they never helped you out when you were down, they never defended you or even cared how you feel or have felt.
Of course, there's other things out there to motivate. However, video games, music, TV, internet and so on, I think they're the scape goats to the real problem. I think as cheesy as it was, Scream was right, horror movies don't make serial killers, it just gives them creativity.