Federal agents once persuaded police officers in southern California to use license-plate readers to gather information on gun show customers, according to a report posted at Wall Street Journal Sunday night.
Emails reviewed by the Journal revealed that agents with the Immigration and Customs Enforcement agency in 2010 planned to get local law enforcement to use the devices to gather information on cars parked in parking lots at gun shows, including a well-known show in Del Mar.
And they're not happy with it being found out:
More than half of the pages provided by the agency were completely
redacted, or blacked out; others have large sections redacted,
apparently to keep secret how the surveillance was undertaken.