I thought Emmanuel Macron was asking for trouble when just after his 2017 election victory he staged a victory celebration in which he walked, alone and floodlit, across the courtyard of the Louvre, the old royal palace. Who does he think he is, I thought, the King of France? Since the Bastille fortress was stormed by the people of Paris on July 14, 1789, the country has got rid of three kings, two emperors and several presidents, and has worked its way, often violently, through 15 constitutions. Every time there has been a major uprising, it has taken everyone by...