There are times when every act, no matter how private or unconscious, becomes political. Whom you live with, how you wear your hair, whether you marry, whether you insist that your child take piano lessons, what are the brand names on your shelf; all these become political decisions. At other times, no act--no campaign or tract, statement or rampage--has any political charge at all. People with the least sense of which times are, and which are not, political are usually most avid about politics. At six one morning, Will went out in jeans and a frayed sweater to buy a quart of milk. A tourist bus went by. The megaphone was directed at him. "There's one," it said. That was in the 1960's. Ever since, he's wondered. There's one what?