Rahm Emanuel ducked out of City Hall alone on Tuesday, his usual security detail walking slightly ahead of him. Across the street at Daley Plaza, 150 activists had gathered to celebrate his vanquishing at an event called "Celebrate the End of Rahm Emanuel’s Reign of Terror". . . The calm, matter-of-fact way that Rahm's rule is coming to an ending is shocking—particularly so if you compare it to the mood of eight years ago. In 2010, Obama's former chief of staff returned to Chicago from the White House poised as a conquering hero ready to assume his rightful place on...