AP Photo

The camera focuses on an official of the Service Employees International Union (SEIU), California’s largest public-employee union, sitting in a legislative chamber and speaking into a microphone. “We helped to get you into office, and we got a good memory,” she says matter-of-factly to the elected officials outside the shot. “Come November, if you don’t back our program, we’ll get you out of office.’

The video has become a sensation among California taxpayer groups for its vivid depiction of the audacious power that public-sector unions wield in their state. The unions’ political triumphs have molded a California in which government workers thrive at the expense of a struggling private sector.