Making it to the White House will shift prejudices not only in America, but far beyond. Hillary Clinton was on my mind even before word came of the death of Mario Cuomo. The former governor of New York will be remembered by those who have long forgotten, or never knew, his record running that state chiefly for his oratory and his knack for an enduring phrase. Eight minutes spent on YouTube watching his 1984 rebuttal of Ronald Reagan’s depiction of the US as a “shining city on a hill” will not be wasted. It was Cuomo who memorably told us:...