I don’t think there is going to be a Why in this story.
There’s certainly a What Happened, and as journalists, that’s our first job.
The remaining details will fill themselves in over time, but the Why will probably never come.
Everyone will blame what they want to blame — no, what it is convenient for them to blame. Culture, violence, video games, teenage cliques, difference, isolation, loneliness, prescription drugs, gun laws.
Everyone has an angle.
Report what you have to report, and write what you have to write, but don’t pretend this is one we’re ever going to figure out, any more than we figured out Columbine or any of the others.