The partner in that plan was Nexar, a company that already has cameras installed across a large number of vehicles. The Los Angeles Police Department let its Flock contract expire in July, citing “serious concerns” over privacy and civil liberties. The installation of Flock cameras on federal buildings has drawn its own wave of criticism. Frequently Asked Questions What exactly did Flock Safety propose with Nexar? The LAPD let its contract with Flock Safety expire in July, citing “serious concerns” over privacy and civil liberties issues tied to the license-plate tracking system.