A new report reveals how a major U.S. city has been quietly implementing a controversial surveillance program that tracks residents' movements through public transit data, raising serious privacy concerns. Officials argue the system is designed to improve efficiency and public safety, but critics warn it could set a dangerous precedent for government overreach. The program’s expansion has sparked debate among lawmakers, privacy advocates, and local residents, with some calling for stricter oversight. Details on how the data is collected, stored, and used remain limited, leaving many questions unanswered.