I like to think of myself as an easy going parent, I was picked really bad on once in grade school, I came home & told my mom, and she told me that if anyone puts their hands on you "clean their clock".
I pretty much raised my kids the same way, with the exception that if someone is starting in on them they need to give the person a warning/chance to walk away.
My wonderful son has always been a gentle giant he's 6'4" and still a sweet kid at 21