Why would the union that represents LAPD officers even think of endorsing liberal Jerry Brown to reprise his disastrous turn as California's governor? Because politics is full of compromising positions. There is a story, probably apocryphal, often told about Winston Churchill. It’s the one in which he’s in conversation with an aristocratic woman, to whom he makes a proposal. “Madam,” he says, “would you sleep with me for five million pounds?” “I suppose I would,” says the woman. “We would have to discuss the terms, of course.” “Would you sleep with me for five pounds?” asks Churchill. The woman is...