On the other hand, I'd definitely want my children to be familiar with it. Bullying is not something isolated to schools. I've seen it in nearly every social and political situation that exists at nearly every age group. In my estimation people are getting worse at identifying it and collectively we're getting worse at punishing it.
I'm glad I learned how to shut it down quick or avoid it altogether earlier rather than later.
Being let out into the world thinking everybody loves you sounds like a terrifying idea too.
Are you also taking photos for blackmail purposes? That'd very possibly shut the whole thing down.
If it's a peer in a more professional setting, simply calling them out generally makes you less a target, especially if calling out their behaviour is done in a group setting. It comes down to the old "stand up for yourself" rule we've all heard. Also, calm confidence tends to work with adults too.
If the bullying is coming from above, time to move on. I have zero patience for it, and there's likely no stopping them.
Also, I'm not suggesting you take them outside, although I know a couple guys who've been through fights between coworkers in their workplaces. Grown men (in their 30s) sure can take a long time to grow.
Unless you live in prison or a war zone I highly doubt you've witnessed "adult" bullying that remotely approaches the ferocity and cruelty some kids have to endure on a daily basis.
"If another kid is throwing sand at you and won't stop when you ask, tell a grown up."
No, grown ups were also raised on this garbage and won't do anything. What's the teacher going to do if the other kid won't stop? Go tell the principal? And what will they do? Nothing.
The correct thing to do is to shove the other kid. Don't hurt them; just indicate they need to back off. If they still don't, throw sand at them, and then while they're recoiling, shove them down and kick them.
Society has a major problem where proper, proportionate, defensive violence is punished, and it traces back to this kind of crap.