New York City’s police union is calling for a boycott of Quentin Tarantino films after the “Pulp Fiction’’ director took part in an anti-police rally less than a week after an officer was killed on the job.

“When I see murders, I do not stand by . . . I have to call the murderers the murderers,” the director — notorious for his violent movies — told a crowd of protesters in Washington Square Park on Saturday, adding that cops are too often “murderers.”

Patrick Lynch, president of the Patrolmen’s Benevolent Association, lashed out against the “Reservoir Dogs” auteur Sunday, the New York Post reports.

“It’s no surprise that someone who makes a living glorifying crime and violence is a cop-hater, too,” Lynch said in a statement.

“The police officers that Quentin Tarantino calls ‘murderers’ aren’t living in one of his depraved big-screen fantasies — they’re risking and sometimes sacrificing their lives to protect communities from real crime and mayhem," Lynch said.