Modern libraries serve a far broader mix of people and personalities then almost any other public service organization. And by far, the majority of library patrons are pleasant, cooperative, and appreciative of our services.
A certain percentage, however, range from difficult, to demanding, to angry, to irrational, to downright scary. These patrons require special attention, special skills, and special strategies if we are to interact with them effectively and make our libraries safe and sane places for us to work in, and feel good about.