A television advertisement released on March 1 by the New York City Patrolmen’s Benevolent Association, the largest police union representing NYPD officers, is the latest in an ongoing battle between union leaders and the CCRB –the Civilian Complaint Review Board.

The Patrolmen’s Benevolent Association, known as the PBA, called for the resignation of CCRB Chairman Richard Emery after his law firm represented a man suing an NYPD sergeant and an officer. The CCRB is a board of citizen investigators who look into cases of alleged police misconduct. The PBA felt Emery’s work on behalf of the CCRB was compromised after he began representing the plaintiff on behalf of his firm.

Emery refused to resign and said the union leaders were “squealing like a stuck pig.” The new television ad will run until March 14. It calls for Mayor de Blasio to step in and fire Emery from the CCRB.