I'm sorry to burst your bubble but you will never be able to fully control what teenagers do. You may be savvy enough to tutor them but good luck to you to get them to heed the advice.
It's not about trying to control behavior, that's a sure fire way to alienate your child. It's about preparing them for the realities of the ugly side of human behavior before they get caught deer-in-headlights style by it when it comes at them full force. As many have said on this topic, kids are cottonballed by their over protective parents, then loose their shit when they hit reality. It's about teaching coping skills as opposed to enforcing limits on social media access etc.
The problem here is that society and culture haven't moved as fast as technology did.
This is the point I was somewhat erratically driving towards. So to counter this lag, again, preparation is the key. You don't send a soldier into battle without teaching them what to expect from the enemy. Teaching kids how to identify the enemy will always be the problem, they trust too much, but that's just another challenge in parenthood I guess.
And I think that it's the same as things have always been except thanks to Facebook we know why the suicide happened. Before Facebook, these were mysteries to the parents and families - but there's suddenly a digital trail.
A valid point I had not even considered. Much the same as the perception of a more violent society due to increased media coverage. Interesting.
Understanding is always the understanding of a smaller problem in relation to a bigger problem. -- P.D. Ouspensky