The cause of violent actions isn't in the inanimate objects utilized, it's in the person committing those acts. This is why gun bans don't eliminate the violence, but simply direct the violent into other means...
Are Facebook and violent video games to blame? Computers and the Internet in general? Our latch-key manner of raising kids?
There's been a fifty year long social experiment going on, using kids as lab rats.
It isn't going well.