My class of sixth graders has been reading Harper Lee’s classic novel To Kill a Mockingbird this month. Today, I am showing them the movie version. I just now saw the scene where Atticus leaves work, comes home, and kills a rabid dog with one shot. It struck me forcefully in that moment how much Barack Obama is like Atticus Finch. Osama bin Laden was his rabid dog—his chance to show the hard edge that exists under all the beliefs about the importance of taking someone else’s perspective. And when he had to, he pulled the trigger.