This is from Martin Luther King, Jr.’s collection of sermons, Strength to Love:
Nonconformity in itself, however, may not necessarily be good and may at times possess neither transforming nor redemptive power. Nonconformity per se contains no saving value, and may represent in some circumstances little more than a form of exhibitionism. Paul in the latter half of the text [Rom 12:2] offers a formula for constructive nonconformity: “Be ye transformed by the renewing of your mind.” Nonconformity is creative when it is controlled and directed by a transformed life and is constructive when it embraces a new mental outlook. By opening our lives to God in Christ we become new creatures. This experience, which Jesus spoke of as the new birth, is essential if we are to be transformed nonconformists and freed from the cold hardheartedness and self-righteousness so often characteristic of nonconformity. Someone has said, “I love reforms but I hate reformers.” A reformer may be an untransformed nonconformist whose rebellion against the evils of society has left him annoyingly rigid and unreasonably impatient.
Some years ago Professor Bixler reminded us of the danger of overstressing the well-adjusted life. Everybody passionately seeks to be well-adjusted. We must, of course, be well-adjusted if we are to avoid neurotic and schizophrenic personalities, but there are some things in our world to which men of goodwill must be maladjusted. I confess that I never intend to become adjusted to the evils of segregation and the crippling effects of discrimination, to the moral degeneracy of religious bigotry and the corroding effects of narrow sectarianism, to economic conditions that deprive men of work and food, and to the insanities of militarism and the self-defeating effects of physical violence.
Strength to Love, Fortress Press, 2010, pp. 17-18 (pp. 26-27 in the older editions)