The South Portland Police Department wants to deploy a new surveillance system, mounted on the tops of police cruisers, that will allow them to scan license plates, map the car locations, and compile this data to create a database of where people travel throughout the day. The Portland Press Herald has a story on it today, and my colleague Alysia summed up our objection perfectly: this turns the presumption of innocence on its head. The Constitution strikes a balance between the police interest in catching criminals and the right to be left alone, which Justice Brandeis once characterized as "the most comprehensive of rights." Surveillance changes the way people behave. We want to live in a world where people act as if they are free citizens, not as if they are always being watched. That is why the ACLU of MAINE will continue to speak out against new surveilance technology and why we will be supporting Sen. Damon's bill to ban such surveilance technology (the Maine Legislature passed, and the Governor signed, a related ban into law this past session, but perhaps South Portland did not get the message). We hope you are concerned about police surveillance technology too and will help us.