Last week was full of horror, disbelief and touching compassion. It was also a week driven by photographs and discussion about photography. From the iconic photo by Boston Globe’s John Tlumacki on the cover of Sports Illustrated, to the hundreds of citizen photos turned in to the FBI, the story and the events that followed were driven by photography. It’s fair to ask whether that has been a good or bad thing. Thousands of people uploaded photos and the online…