Malcolm Gladwell on niceness in politics:
The problem, of course, is that niceness is overrated as a virtue. Many cultures are nice. The Southern antebellum aristocracy was marvellously well-mannered; its members left tasteful calling cards, entertained gracefully, and conducted their personal affairs with the utmost discretion. But they had few other virtues; in fact, it was the practice of niceness that helped to keep other values, such as fairness, at bay. Fairness sometimes requires that surfaces be disturbed, that patterns of cordiality be broken, and that people, rudely and abruptly, be removed from their place. Niceness is the enemy of fairness.