The nephew of the celebrity hair stylist who was murdered by Charles Manson devotee Leslie Van Houten and other followers of the cult leader slammed the septuagenarian’s parole, saying release of the “cold-blooded killer” will set a “dangerous, pernicious precedent.”

“My thoughts are with the victims, all the victims and all of our families,” actor and producer Anthony DiMaria told CNN’s Laura Coates as Van Houten was released from prison after more than 50 years Tuesday.

“As Leslie collectively tortured, conspired, and killed her victims, so too our families are collectively bound by the loss and suffering of her crimes.”

DiMaria, 57, was only three years old on Aug. 8, 1969, when his uncle, Hollywood hairdresser Jay Sebring, and five others were stabbed to death by a group of Manson followers at actress Sharon Tate’s rented house in Los Angeles’ Benedict Canyon.

The following night, another group of “Family” members, including Van Houten, mutilated and murdered grocery executive Leno LaBianca and his wife, Rosemary, at their Los Feliz home.

Van Houten, then 19, later admitted to holding Rosemary LaBianca down while others stabbed her before stabbing her more than a dozen times when urged to “do something” by another cult member. She was not connected to the mass murder at the Tate home.

“I fear that a very dangerous, pernicious precedent is established today that will affect millions of victims of violent crimes throughout California today and in the years to come,” DiMaria said of Gov. Gavin Newsom’s decision not to fight the appeals court’s decision to parole Van Houten, who is now 73.

He also dismissed Van Houten’s repeated claims that she was manipulated and victimized by Manson.

“[Van Houten is] a cold-blooded killer in one of the most notorious murder rampages in United States history,” he insisted.

“So with her release now, any other violent criminal or killer whose, uh, crimes fall beneath the bar of Leslie Van Houten’s very extreme … crimes, that also have historical impact, that opens the door for them.”

At the time of her initial conviction in 1971, Van Houten was the youngest woman in California to receive the death penalty. Manson and his murderous followers’ sentences were commuted to life in prison the following year.

“It is our fear … that the floodgates in the California penal system will be unhinged [by Van Houten’s release],” DiMaria lamented.

When asked if Van Houten had contacted his family, DiMaria explained that she is likely barred from doing so because her convictions stem from the LaBianca killings, as opposed to the murder of Sebring, Tate, and their friends the previous night.

DiMaria also remained relatively tight-lipped on Newsom, who admitted last week that he was “disappointed” by the Court of Appeal’s decision to release Van Houten.

“I certainly have respect for Gov. Newsom and the attorney general, but our families strongly, vehemently disagree with their decision not to file an appeal,” he said.

News of Van Houten’s release also struck a chord with the LaBiancas’ surviving relatives.

“My family and I are heartbroken because we’re once again reminded of all the years that we have not had my father and my stepmother with us,” Leno LaBianca’s daughter, Cory LaBianca, told the Associated Press Friday.

“My children and my grandchildren never got an opportunity to get to know either of them, which has been a huge void for my family,”

Charles Manson died of natural causes behind bars in 2017, at age 83. Van Houten’s fellow so-called “Manson Girls” Susan Atkins and Linda Kasabian passed away in 2009 and June of this year, respectively.

Of the original group of Manson devotees convicted in the Tate-LaBianca murders, only Tex Watson, 77, and Patricia Krenwinkel, 75, remain in prison.

“I don’t believe a person that’s capable of committing such a heinous crime can ever be rehabilitated, that kind of thing is ingrained in your DNA,” former model Ava Roosevelt told The US Sun this week.

Roosevelt, now 75, says she narrowly avoided becoming one of Manson’s victims when she passed on an invitation to Sharon Tate’s home on the night of the murders.

“It’s a sad day for me, it really is, because I don’t think justice has been served for Sharon and the other victims at all,” she added of Van Houten’s parole.

Tate, 26, was almost nine months pregnant at the time of her death. She is buried in Culver City alongside her and director Roman Polanski’s unborn son, who was posthumously named Paul Richard Polanski.

Sebring, 35, dated Tate from 1964 through 1966, when she left him for Polanski. The pair remained close friends, and he was wearing her high school ring when he died.

Folgers coffee heiress Abigail Folger, 25, her boyfriend, aspiring writer Wojciech Frykowski, 32, and visitor Steven Parent, 18, were also killed at the Benedict Canyon house.

In addition to his own acting work, DiMaria has also spent a substantial part of his career preserving his uncle’s memory.

The effort culminated in the critically-acclaimed documentary “Jay Sebring…Cutting to the Truth,” which covered the Korean War veteran’s innovative hair styling career and life as a little-known Hollywood heavyweight.

As of Wednesday, Van Houten is in transitional housing – and is free for the first time since her late teens.

“She’s just grateful that people are recognizing that she’s not the same person that she was when she committed the murders,” her attorney Nancy Tetreault previously said.