"We are complex animals living complex lives in which we are not always able to cope with the difficulties that we face. As a result, we are subject to feelings of tension and stress, for example the cognitive dissonance and potential shame of doing something outside our values. To handle this discomfort we use various coping methods."

"We cope with difficulties in various ways. Some are more positive than others. Perhaps the worst kind is where we may attack others. Arguably, all attacks on others are forms of coping with our own internal troubles."

This link may be useful.