A mass-shooting in Annapolis, Maryland, at the Capital Gazette yesterday killed five journalists, making it the most deadly domestic attack on the press since 9/11. Local police say a suspect in custody, Jarrod Ramos, appears to have acted alone and been motivated by retribution for a failed defamation lawsuit against the paper. As accounts of the shooting and its aftermath arrived, one detail stood out: The suspect was uncooperative after apprehension, and the county police used facial-recognition technology to identify him. Some would celebrate the use any available technology to name an unidentified and uncooperative suspect caught in the act of a mass shooting, especially before the incident is clearly contained. But recently, complex surveillance technologies, like a service that Amazon pitched to law enforcement, have come under scrutiny.