Since a federal jury on Friday sentenced the convicted bomber to death, the [Boston Marathon] finish line suddenly seems to be a place of ambivalence. Fresh flowers are accumulating. A sense of sorrow lingers in the air. Sightseers who come to snap a photo feel a little self-conscious. Residents train their gaze on the line, and the conversations turn to death — and disappointment. “I was shocked,” said Scott Larson, 47, a records manager who works near the finish line. “The death penalty — for Boston.” To many, the death sentence almost feels like a blot on the city’s collective...