The head of the New York Police Department's union has called for a boycott of Quentin Tarantino's films after the director took part in an anti-police protest Saturday, four days after one of New York's Finest was murdered by a suspect he was pursuing. 

Tarantino, whose oeuvre includes the notoriously violent films "Reservoir Dogs", "Pulp Fiction", and "Django Unchained", flew in from California to take part in the event with hundreds of other demonstrators.

"I'm a human being with a conscience," Tarantino said. "And if you believe there's murder going on then you need to rise up and stand up against it. I'm here to say I'm on the side of the murdered."

"It’s no surprise that someone who makes a living glorifying crime and violence is a cop-hater, too," Patrick Lynch, president of the Patrolman's Benevolent Association, said Sunday in response to Tarantino. "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."

Saturday's rally, which gathered in Manhattan's Greenwich Village neighborhood at Washington Square Park before marching about 2 miles along Sixth Avenue, came in the wake of the shooting death of 33-year-old Officer Randolph Holder. Holder was shot to death in the city's East Harlem neighborhood while pursuing a bicycle thief. A suspect has been charged with murder and robbery in the case.

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"I think it’s very disrespectful,” Holder's cousin Shauntel Abrams told the Post. "Everyone forgets that behind the uniform is a person."

The New York Post reported that Tarantino acknowledged the timing of Saturday's rally was "unfortunate." But the director, whose latest film -- "The Hateful Eight" -- hits select theaters on Christmas Day,  said the rally had to go ahead because people had traveled long distances to attend.

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The Associated Press contributed to this report.