Chicago has the most sophisticated surveillance system in the U.S., according to a Chicago Tribune article Tuesday. However, the American Civil Liberties Union of Illinois said the thousands of cameras around the city threaten individual privacy:

Police say they usually hear from Chicago residents about the cameras only when they want one installed in their neighborhood or worry one will be removed. Such a claim is supported by an unlikely source: The American Civil Liberties Union, which has criticized the use of cameras as an invasion of privacy and ineffective crime fighting tool.

"It does appear that people only object is when they get a ticket (because of a camera) for running a red light," ACLU spokesman Edwin Yohnka said.

Although courts have generally found surveillance cameras placed in public don't violate individuals' privacy, Yohnka said they could too easily be misused.

"What protections are in place to stop a rogue officer from taking a highly powerful camera and aim it in a way to find or track someone who is perhaps a former love interest or something like that?" he asked.

Read past posts about surveillance cameras in Chicago:

Covert Cameras Coming to Chicago

Cameras Everywhere