[Revolting cat!]

As if there weren't spree killers at public events or mass murderers of children at schools prior to Rock N Roll and Video Games and movie violence.

There were? Links to source please. (This is not to say that rock'n'roll is at fault, only to challenge the above assertion.)

[discostu]

Here’s a good list

http://en.wikipedia.org/wiki/Spree_killing

Going all the way back to 1913.