Actually no, it is the combo of guns and humans. And not a lot to do with your taste in music
Another terrible news story from Finland this morning of a School Massacre
So how do you think this stuff spreads?
a. the human factor – copying again – like suicide. And so much else.
b. guns – much harder without the weapons being readily available
UPDATE: c/o BBC a timeline of recent such events to help you follow the trail
Q: In a world where it's so easy to see what other folks are doing, what would you do to minimise the chance of this happening again?