anger focused with precision

Anger is loaded with information and energy. 

(...)

Every woman has a well-stocked arsenal of anger potentially useful against those oppressions, personal and institutional, which brought that anger into being. Focused with precision it can become a powerful source of energy serving progress and chnage. And when I speak of change, I do not mean a simple switch of positions or a temprary lessening of tensions, nor the ability to smile or feel good. I am speaking of a basic and radical alteration in those assumptions underlining our lives. 

- Audre Lorde, The Master's Tools will never dismatle the Master's House (1981)