David Murray was also back again, and, never one to shy away from a fight, took aim at the regulator, bristling at the idea that boards should be held legally accountable for the cultural malaise that had infiltrated the banks. He grasped for a metaphor. “To be completely candid,” he said, “Adolf Hitler comes to mind.” It was a memorable line – Murray had almost set a land-speed record for the application of Godwin’s Law – that the longer an argument goes on, the more likely someone will be compared to a Nazi. “There have been people in the world...