To accept passively an unjust system is to cooperate with that system; thereby the oppressed become as evil as the oppressor. Non-cooperation with evil is as much a moral obligation as is cooperation with good. The oppressed must never allow the conscience of the oppressor to slumber. Religion reminds every man that he is his brother's keeper. To accept injustice or segregation passively is to say to the oppressor that his actions are morally right. It is a way of allowing his conscience to fall asleep. At this moment the oppressed fails to be his brother's keeper. So acquiescence-while often the easier way-is not the moral way. It is the way of the coward.

Three Ways of Meeting Oppression (1958)