I don't know. Some folks just need a beatin'.
I have worked in several bars in a college town and have notice an increase in young folk who don't know proper social exchange. They are the product of a family (or lack thereof) that failed to instill both common sense and courtesy. Mom and Dad may have spared the rod, but life will oblige them eventually.
Domestic violence, on on the other hand, is a sticky wicket. I have personally seen a friend get a ride and a couple of bracelets for the privilege of having his much smaller but rather feisty girlfriend beat him with various objects. Neighbors hear her screaming and call the fuzz (takin' it back to the '70s) and all of a sudden I'm collecting bail $$$. Some things aren't so cut and dried.
Rant off. I return your thread to its previous state.