When people see others doing wrong and conceive aversion and disdain, that is like grabbing the knife from someone about to kill himself and committing suicide with it your self. It is the other who is doing wrong, not compelling you; why take on others wrongs and make them into your own sickness?
Reference: Treatise on sitting and forgetting
Taoist Meditation: Methods for Cultivating a Healthy Mind and Body
p. 91