It has long been the most delicate day in the German calendar, 9 November. It brings a balancing act of remembrance for the state-sanctioned murderous devastation of the Nazi pogroms across the country in 1938, and, 51 years later, the overnight collapse of the most famous barrier in the world, the Berlin Wall. Both had international repercussions which are still felt today. The former dominates the nation’s collective memory. Marking the date has never been easy. For good reason 9 November was not chosen in 1990 as unified Germany’s national holiday. Historians and commentators have long referred to it as...