"Going postal" was a thing.

It was a thing before Columbine, cause man, I remember the talks at school about that.

The class was brought out, we sat under a tree, and were allowed to talk about our feelings.

One of my bullies looked me dead in the eye, and said something along the lines of "Its always the quiet ones."

I'm surprised I didn't have to talk to anyone after looking him dead in the eye back and replying "Yeah, it is." Just letting it hang in the air.

I will say, he no longer bullied me after that.

That's ok, I had another bully who learned the hard way that if pushed far enough, I would break bones if provoked enough. Last day of school that year. He clotheslined me and put me in a choke hold when I was running a football, you know, playing like a kid on the last day of school. He still had a hold as we got up, him behind me. When my vision started to dim, I stomped the arch of his foot (multiple fractures, lot of bones there) to get out, then turned and broke his nose with one punch.

It all stopped after that.

Because my teachers were aware of the bullying (thanks for stopping it, assholes) I didn't get in any trouble. This was at the beginning of zero tolerance talks. It was a policy the next school year.

I mean if school shootings are acceptable and there's the chance for many many victims, America should quite happily accept CEO murders to continue.

Depending on the grievance it might still be "class warfare" depending on how loosely you define it.

There may be a personal grievance, but what are the chances that if he had better work conditions, that the personal grievance he had would have driven him to this?

It has literally been taught in schools for decades, what did people expect?

While true, how many of those workplace incidents involved someone from the executive level?