THERE is a quote, worn smooth from overuse but no less true for it, that the arc of the moral universe is long but bends toward justice. Martin Luther King Jr. borrowed it from a 19th-century abolitionist preacher. He believed it. He died before he could see it proven right. The Philippines is living that arc right now — and the bending, when it comes, is rarely graceful. Rodrigo Duterte stood before crowds and told them killing was the answer. He called it governance. Love of country, he said.