Reminds me of a training I once attended --probably the most participatory and positive energy session ever. It basically had one point: "Don't be a dick".
"Don't be one to your friends, family, coworkers, or especially to our customers". The word is hard to define, but easy to recognize. And you kinda always know when you're being one.
Everyone has been one, and no one feels singled out or blamed. Doesn't let anybody leave feeling like a victim or a victor. Yet left people feeling powerful to call other people out for being one, without resorting to stronger language. That company had comradery; it's too bad it takes more than that.