Interesting point from an RKBA site.

Becoming an adult involves learning to respect others and to take responsibility for our own actions. Most people learn those skills and appreciate the values on which peaceful coexistence is predicated. Unfortunately, a minority of people, fewer than 2%, decline to behave in a civilized manner. Civilized behavior, for the purpose of our discussion, could be described as acting humanely towards others even if no punishment would be incurred by acting meanly.