The growing police boycott of Quentin Tarantino's films has been joined by the National Association of Police Organizations.

The group, which describes itself as representing 1,000 police units and associations and over 241,000 sworn law enforcement officers, has told its members that it supports the boycott -- which emerged after Tarantino referred to officers as "murderers." It also asserted that officers should not work for any future Tarantino projects, the Boston Herald reports.

"We ask officers to stop working special assignments or off-duty jobs, such as providing security, traffic control or technical advice for any of Tarantino's projects," a statement on NAPO's website said." We need to send a loud and clear message that such hateful rhetoric against police officers is unacceptable.

The boycott has been joined by police unions in New York, Los Angeles, Houston, New Jersey, Chicago and Philadelphia. The law enforcement action stems from the director's comments referring to officers as “murderers” on Oct. 24 at a Black Lives Matter rally in New York City to protest police brutality -- four days after NYPD officer Randolph Holder was shot to death by a suspect while on duty.

Tarantino’s new film "The Hateful Eight" is scheduled for release on Christmas.

Jamie Foxx, the star of Tarantino's "Django Unchained," came out in support of the director's controversial comments at the Hollywood Film Awards on Sunday, the Hollywood Reporter says.

Referring to the recent criticism Tarantino has faced from police unions and conservative pundits for attending an anti-police violence rally, Foxx said: "Keep telling the truth, keep speaking the truth and don't worry about none of the haters."