Mintz is the author of "Beyond Happiness and Meaning: Transforming Your Life Through Ethical Behavior" and a former dean of the College of Business and Public Administration at Cal State University in San Bernardino.

Were you watching when President Trump was booed after being introduced at Game 5 of the World Series at Nationals Park? Chants of "lock him up" made me think about the decline of civility in society, which the president contributes to on Twitter almost daily.

Trump was a victim of his own disrespectful behavior, having prompted his audiences to chant "lock her up" during his campaign against Hillary Clinton. The point is uncivil behavior begets more uncivil behavior and before you know it, all of society has been infected.