New York City, Saturday—In Manhattan, they say, everyone wears black, but not this Saturday, not in this plaza just across from the U.N. The demonstrators, perhaps 500, perhaps more, have turned up on this briefly glorious late autumn day in orange hats, in orange scarves, in orange coats, in orange sweaters, draped in orange blankets, wearing orange ribbons; anything, however small, will do so long as it is orange. Baseball cap advertising Land Rover? No problem. If it’s orange, it’s fine. Sweatshirt proclaiming the virtues of Steinway pianos? Why not? It’s orange. Orange flags flutter, orange balloons bob against a [...]