WHEN THE inhabitants of Planet America line up to elect their leader in November, they will, in all likelihood, choose between two candidates— Hillary Clinton and Donald Trump—who are more violently unlike each other than those in any previous American presidential election contested by two or more candidates: in other words, in any election since 1796, when John Adams became president of the United States. (George Washington, before him, twice ascended to office by unanimous vote.)
Hillary and Trump are not just different—they are as mutually contrasting as Switzerland and ISIS, or quinoa and steak.
Each candidate stands to break the political mould. Trump will not, by any means, be the first racist to be elected president if he wins; but he will be the first realtor or casino operator,…