I don't like to think of myself as a violent person, but if some schmuck swung a cane, and missed me by a few inches, that would not go over well.
A couple of years ago, I had a female supervisor who became very difficult. We ended up in our company's personnel dept and I made her look like the jerk she was. It was not difficult, I just let her do most of the talking. Sometimes if you give a person enough rope, they will hang themselves.
Oddly enough her and I have now become great friends.