I read an article this morning proposing a great mental exercise: imagine a completely arbitrary split between two parties. Then, imagine one day that incontrovertible proof arises that one of the parties was right all along. How would people react? How would you react, were you on each side of the fence? Don't be arrogant about it -- at some point everyone is wrong!
The article suggests five or six responses. Here's one, to whet your appetite.
Barron the Green stared incomprehendingly at the chaos of colors for long seconds. Understanding, when it came, drove a pile-driver punch into the pit of his stomach. Tears started from his eyes. Barron thought of the Massacre of Cathay, where a Blue army had massacred every citizen of a Green town, including children; he thought of the ancient Blue general, Annas Rell, who had declared Greens "a pit of disease; a pestilence to be cleansed"; he thought of the glints of hatred he'd seen in Blue eyes and something inside him cracked. "How can you be on their side?" Barron screamed at the sky, and then he began to weep; because he knew, standing under the malevolent blue glare, that the universe had always been a place of evil.
Go read the whole thing.