Before she became the mayor of Chicago, last year, Lori Lightfoot spent nearly a decade working on police reform. Now Lightfoot is facing civil unrest over police brutality and criticism by the President for the homicide and shooting rates in her city. David Remnick spoke with Mayor Lightfoot about the state of the city, policing, and President Trump’s recent decision to send two hundred federal agents to help “drive down violent crime.” Plus, The New Yorker’s William Finnegan reports on what the repeal of an arcane law reveals about the conflict among police, protesters, and politicians.