No Evidence That Public Surveillance is Making Us Safer

After the terrorist attacks of Sept. 11, 2001, local governments across the country set aside concerns over privacy and installed surveillance cameras in public streets and plazas.

Now — even after a damning report by the head of London’s extensive surveillance network and with little evidence that the systems work — police in many cities are trying to add thousands more cameras to their networks.

“‘Cameras Everywhere’ continues to be the best description of the trend in the video surveillance market,” security market analysts J.P. Freeman Co. said in a report in 2006 that estimated that a quarter of major U.S. cities were investing in the technology.