The Kill Bill director spoke at a protest in New York City on Saturday (24Oct15) to express outrage over the alleged mistreatment of suspects in police custody, and his speech to the crowd enraged several high-ranking law enforcement officials.

"I'm here to say I'm on the side of the murdered," he reportedly declared, "When I see murders, I do not stand by... I have to call a murder a murder and I have to call the murderers the murderers."

Quentin's words provoked controversy as they came just days after the murder of a police officer in the Big Apple, and now his father Tony Tarantino has waded in to criticise his famous son.

In a statement issued from the Patrolmen's Benevolent Association (PBA), the largest union representing New York police officers, Tony is quoted as saying, "I love my son and have great respect for him as an artist, but he is dead wrong in calling police officers, particularly in New York where I grew up, murderers."