Several cities, encouraged and funded by the Department of Homeland Security, are installing secret recording devices in their buses and other public transit.
Remember, it's for your safety:
"The systems are being installed in San Francisco, Baltimore, and other cities with funding from the Department of Homeland Security in some cases, according to the Daily, which obtained copies of contracts, procurement requests, specs and other documents.
The use of the equipment raises serious questions about eavesdropping without a warrant, particularly since recordings of passengers could be obtained and used by law enforcement agencies."
Secret Microphones Being Installed in Public Transit