SULLIVAN — Graham Platner was standing 20 feet away from the leader of the free world, surrounded by World War II veterans, when he made his move. It was October 2002. President George W. Bush was headlining a campaign rally for local Republicans in Bangor amid the buildup to the Iraq War. The 18-year-old Platner and his friend, Alex Desmond, had brought a homemade “No War” sign. They wanted to make a scene. Once inside, Desmond had second thoughts. But after Bush made a joke about protesters who weren’t allowed into the event, there was no stopping Platner. “Graham’s eyes...