When Reuters/Hollywood Reporter ran an article laying out the “eerie links” between the Harry Potter saga and the killing of Osama bin Laden, the mockery came fast and furious. But sociologists say it isn’t a joke for many members of the Millennial generation (born 1980-2000), for whom the Sept. 11 attacks and the Harry Potter books and movies are formative cultural touchstones. For them, “it’s a Harry Potter world,” says historian Neil Howe. And now “it’s like Voldemort is dead.”