Copycats

So, a nutcase goes ape on a college campus and blows away 32 people, destroying countless more lives in the process. As if that isn't bad enough, we now have to put up with this crap.
And this.
And this.
Hell, even in the valley we've got lunatics. Not like this is Utopia or anything...
When did mass murder become cool?
When did it become worthy of emulation?