Yeah, it sucks that some of you were horribly treated when you were young, but get the fuck over it already.
You obviously have no idea what you're talking about. Victims of constant bullying exhibit the same symptoms as those who have been repeatedly physically/mentally tortured over long periods of time. It stays with you for the rest of your life, even with good counseling. Those behavioral and emotional patterns get etched into your fucking brain like a steel-cutting laser. You don't just "get the fuck over it".
If you still get overwraught to the point where you fantasize about killing people at shit that happened 10 years ago on a playground, you have problems and you need to address them.
No doubt. But that isn't the issue here. The issue here is that despite all the "zero-tolerance" bullshit the environment from when they were kids and the environment today hasn't changed, which will lead to more fucked up people living in an already fucked up society increasing the chance that they will do something fucked up.
So in light of that, I have established a set of rules with my son to deal with bullying (which were the same set I used when growing up):
1. Tell the kid to stop.
2. If the kid doesn't stop, talk to the teacher.
3. If the teacher doesn't do anything or it continues, talk to the principal.
4. If the principal does nothing and the bullying continues, use deterrent force.
It's amazing how little deterrent force it takes to stop bullying.