Bangladesh is living through another long, sleepless night after the death of Sharif Osman Hadi, and the story of how the country reached this point is darker and more intricate than the first images of burning buses and angry slogans suggest. To understand what his killing has unleashed, you have to start in the days and even months before a gunman raised his pistol in a cramped Dhaka street.A long shadow before the gunshotsOn the surface, 12 December looked like a familiar day in central Dh...