"Authentic compassion may forcefully challenge the system. Sometimes such compassion can take a powerful confrontational form, as occurred with Gandhi, Martin Luther King, the Dalai Lama, and Aung San Suu Kyi. But this differs from anger, because instead of aiming to protect oneself or one’s own position against others, it aims to protect all others, by challenging all in different ways. It can challenge those who cling to a bad system to give others greater freedom. It can challenge those who have been abused to rediscover their great worth and power for good. Unlike self-righteous anger, which hates the “bad ones” on behalf of the “good ones,” confrontational compassion protects all by challenging all differently—those suffering injustices and those inflicting them. It upholds all in their fuller humanity and potential for greater freedom from fear, hatred, and suffering."
From an interview with John Makransky. The whole interview is on the Tricycle website. (Tricycle is a Buddhist magazine.)