Today is the annual day of reflection. For me two small events that occurred on November 14, the day following the Paris attack, represent the despair and the hope left by 2015. No one was singing the words. Everyone knew the song and felt its plaintive prayer course through their souls. Ordinary people gathered beyond the yellow tape encircling the ordinary places people go, ordinary places that became killing fields. Near the entrance to Bataclan Concert Hall where scores of people perished, Davide Martello pedaled his bike, his grand piano in tow. He stopped, sat on the piano bench so his fingers could urge the keys to comfort the bewildered, bemired, beleaguered crowd who longed to Imagine . The night that preceded this dawning day was filled with exploding tweets and posts as the facts, conjectures and theories raced through the same web used to recruit willing killers and to coordinate this attack on humanity. Searchers loo...