"...If you lessen your anger at the structures of power, you lower your love for the victims of power." William Sloan Coffin
I agree with this so very much. There are those Christian peacemakers who believe that nonviolence entails never getting angry. I think that’s a load of *&^%#@! and always have.
Jesus clearly got angry on several occasions. Paul tells us “in your anger, sin not.” And before anyone quotes Matt 5:21-26 at me, I remind you that Greek verb tense is a continual action so that a better translation would be, “[I]f you hold on to anger with your brother [or sister], you will be liable to judgment.” Nursing anger and resentment can lead to sin. That was God’s message to Cain—not that his anger was already sinful, but that it was an opportunity for sin, crouching like a lion, to have him. Cain failed to listen and murdered his brother, Abel. The sad story of the world continues on from there. The purpose of Matt. 5:21-26 is not to present a legalistic standard to which none can attain, refraining from all anger, but to present us with a working mechanism to keep this from becoming an opportunity for our own crouching lions—we go to the brother or sister and we talk—even interrupting worship to do so...
See Michael Westmoreland-White's full essay at the Jeff Street blog.