Geez you're on a hair trigger. I guess I could have been clearer but this wasn't about waiting to be on the recieving end of an incident like this and starting shirt with 3rd party strangers. It's about pre-empting that behavior in people who express the desire to intervene like that, hence the "know or meet". I guess I could say "know or get to know" if it needs to be crystal clear.

This is about misguided friends or juniors. Friends don't let friends be crutches for criminals. And anyone who wants to do that needs an acquaintance to throw them into a wall and ask if they still want someone to step in and stop them hitting back now.