WHAT THE WORLD has witnessed this past week is an image of poverty and social disarray that tears away the affluent mask of the United States. Instead of the much-celebrated American can-do machine that promises to bring freedom and prosperity to less fortunate people abroad, we have seen a callous official incompetence that puts even Third World rulers to shame. The well-reported litany of mistakes by the Bush administration in failing to prevent and respond to Katrina's destruction grew longer with each hour's grim revelation from the streets of an apocalyptic New Orleans.