... A third pattern of motivation, which we have seen repeatedly, this time occurs in the register of justice rather than benevolence.We have seen it with Jacobins and Bolsheviks and today with the politically correct left and the so-called Christian right. We fight against injustices that cry out to heaven for vengeance. We are moved by a flaming indignation against these: racism, oppression, sexism, or leftist attacks on the family or Christian faith. This indignation comes to be fueled by hatred for those who support and connive with these injustices, which, in turn, is fed by our sense of superiority that we are not like these instruments and accomplices of evil. Soon, we are blinded to the havoc we wreak around us. Our picture of the world has safely located all evil outside us. The very energy and hatred with which we combat evil prove its exteriority to us. We must never relent but, on the contrary, double our energy, vie with each other in indignation and denunciation.
Another tragic irony nests here. The stronger the sense of (often correctly identified) injustice, the more powerfully this pattern can become entrenched. We become centers of hatred, generators of new modes of injustice on a greater scale, but we started with the most exquisite sense of wrong, the greatest passion for justice and equality and peace. [...]
The blindness is typical of modern exclusive secular humanism. This modern humanism prides itself on having released energy for philanthropy and reform; by getting rid of "original sin," of a lowly and demeaning picture of human nature, it encourages us to reach high. Of course, there is some truth in this, but it is also terribly partial and terribly naive because it has never faced the questions I have been raising here: what can power this great effort at philanthropic reform? This humanism leaves us with our own high sense of self-worth to keep us from backsliding, a high notion of human worth to inspire us forward, and a flaming indignation against wrong and oppression to energize us. It cannot appreciate how problematic all of these are, how easily they can slide into something trivial, ugly, or downright dangerous and destructive.
A Nietzschean genealogist can have a field day here. Nothing gave Nietzsche greater satisfaction than showing how morality or spirituality is really powered by its direct opposite—for example, that the Christian aspiration to love is really motivated by the hatred of the weak for the strong. Whatever one thinks of this judgment on Christianity, it is clear that modern humanism is full of potential for such disconcerting reversals: from dedication to others to self-indulgent, feel-good responses, from a lofty sense of human dignity to control powered by contempt and hatred, from absolute freedom to absolute despotism, from a flaming desire to help the oppressed to an incandescent hatred for all those who stand in the way. And the higher the flight, the farther the potential fall.
Charles Taylor, A Catholic Modernity?: Charles Taylor's Marianist Award Lecture pp. 32-33 (Oxford UP, 1999)