We are more often treacherous through weakness than through calculation.  ~Francois De La Rochefoucauld

Next time someone ill-treats you, think twice before getting angry.

Bad behaviour could be a result of weakness, rather than pure evil.

Double check and see things from another perspective. Evil is most of the time synonym with powerlessness or a deep sense of vulnerability.

Smile and try to understand the others.

Most of the time they are just crying for help in their own way...