Michael Davidson was seeing patients at Brigham and Women’s Hospital when he stepped away to talk with the son of a deceased woman he had treated and the son shot him. Lawrence O’Leary was on a parking garage under construction at Logan Airport when he fell off the building. David Sutherland was trying to get from his sinking fishing boat to a rescue boat in the ocean off Gloucester. Joseph Brady was crossing a road to a lot in Stoughton where he was selling Christmas trees when he was run over. Lenore Travis was operating a tractor on her small family farm in Lincoln when the vehicle flipped over. These were just five of the 63 persons who died on the job last year in Massachusetts, according to the Massachusetts AFL-CIO. Yesterday, the AFL-CIO released its annual report on deaths in the workplace, “2016: Dying for Work in Massachusetts,” in conjunction with a ceremony at noon outside the State House. The purpose of the event, as reported by the State House News Service, was “to...