TENNESSEE WAS ONE OF THE LAST STATES TO PUT PHOTOS ON DRIVER’S LICENSES, and people who objected were called paranoid. But now: State photo-ID databases become troves for police. “The faces of more than 120 million people are in searchable photo databases that state officials assembled to prevent driver’s-license fraud but that increasingly are used by police to identify suspects, accomplices and even innocent bystanders in a wide range of criminal investigations. The facial databases have grown rapidly in recent years and generally operate with few legal safeguards beyond the requirement that searches are conducted for ‘law enforcement purposes.'”