Snoop Dogg has branded Arnold Schwarzenegger 'b****' and a 'racist' as the killer he pardoned at end of gubernatorial term is freed early.

Esteban Nunez, 27, the son of Fabian Nunez - a political ally while Schwarzenegger was governor - was released from jail Sunday after serving less than six years of a 16-year sentence.

Nunez was jailed in June 2010 for stabbing college student Luis Santos, who was 22 at the time, to death in San Diego. But, on his last day in office in 2011, Schwarzenegger commuted the sentence to just seven years.

Now Snoop Dogg has hit out at the Hollywood actor calling him a 'racist piece of s***' for commuting his friend's son's sentence, while rejecting a stay of execution for Crips gang founder and former leader Stanley 'Tookie' Williams.

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Snoop Dogg has branded Arnold Schwarzenegger 'b****' and a 'racist' as the killer her pardoned at end of gubernatorial term is freed early

'Arnold Schwarzenegger is a straight b****,' the rapper said in a video released on his Instagram page.

'How the f*** you gonna let this n***** out of jail but you gonna kill Tookie Williams? You are one motherf***ng racist piece of s***.

'You is a b****, you is a punk. Mother f***er I can't stand you.'

Tookie Williams was one of the early leaders in the West Side Crips, based in South Central Los Angeles in 1969.

In 1979, he was convicted of four murders, shooting dead a 7-Eleven clerk, as well as an elderly Taiwanese couple and their daughter.

After entering jail, was said to have renounced gang membership and even wrote several anti-gang and anti-violence literature and children's books. He was even nominated for the Nobel Peace Prize for his anti-gang efforts.

Tookie was executed by lethal injection in 2005 after the then-Governor Schwarzenegger rejected both his plea for clemency and a four-week stay of execution.

Esteban Nunez (pictured), 27, has been freed after his manslaughter sentence was reduced from 16 years to seven in 2011 by then-Gov Arnold Schwarzenegger

Snoop Dogg has hit out at the Hollywood actor calling him a 'racist piece of s***' for commuting his friend's son's sentence

Tookie Williams (pictured as a baby-faced teen, left) was just 15 when he became the leader of a small street gang. Two years later he founded the infamous Cripps gang. He was convicted of murder and later became a leading anti-gang and anti-violence proponent (pictured in jail, right)

Tookie was executed by lethal injection in 2005 after the then-Governor Schwarzenegger rejected both his plea for clemency and a four-week stay of execution. Rapper Snoop Dogg (right) had protested against the execution wearing a t-shirt which read 'Save Tookie.org'

'Arnold punk a** didn't let tookie out or reduce his sentence,' Snoop wrote on Instagram. 'N he was a Nobel piece prize nominee. Sad day in politics. F*** u Arnold n the horse u rode in on b****.'

He also warned former body builder and action star Schwarzenegger that he would not be removing his video rant any time soon.

'I ain't changing s***.How dare you think I'm goina take this post down. You don't scare me n*****,' he said in a second video post.

Nunez will spend three years on parole supervision in Sacramento County after his release on Sunday, according to the California Department of Corrections and Rehabilitation.

Since his release, Schwarzenegger has also come under fire from the victim's famil

My son (was) stabbed in the heart when he was alive,' Fred Santos, Luis's father told CNN. 'Schwarzenegger stabbed him in the back after my son is killed.

Last summer, a Court of Appeal ruled that the Hollywood star's decision to free Nunez early could be seen as 'grossly unjust'.

But as it was not illegal, the court was not able to overturn the ruling.

'Back-room dealings were apparent,' the court wrote of Schwarzenegger's move.

Presiding Justice Vance W. Raye wrote in a concurring opinion, 'As reprehensible as the Governor's action in this instance might have been, it would be equally reprehensible to ignore the clear language of a constitutional provision.'

Mr Santos, had been outraged and complained that, as Luis' family, they had not been informed of the decision.

Nunez is the son of Fabian Nunez (left), the former speaker of the state Assembly and a political ally while Schwarzenegger (right) was governor

Former California Assembly Speaker Fabian Nunez's (right) son Esteban Nunez (left) had his sentence slashed by Arnold Schwarzenegger

Nunez was jailed in June 2010 (pictured in court in 2008) for stabbing college student Luis Santos, who was 22 at the time,to death in San Diego

'I guess if you're the son of somebody important, you can kill someone and get all sorts of breaks,' Santos told the Contra Costa Times in 2011.

Esteban Nunez received credit for good behavior and was ultimately released after serving less than six years.

'Our son has paid his debt to society. ... He is committed to continuing the work of healing, self-reflection and spiritual growth,' the Nunez family said in a statement released Friday.

Santos' mother had anticipated Nunez's early release and she steadfastly believes a high-level political favor is sending him home.

'It makes you sick that something like this can happen, and you have no power,' Kathy Santos told the Los Angeles Times, adding she doesn't believe the young man has reformed.

Prosecutors said Nunez and Ryan Jett, both armed with knives, acted together in the attack that killed unarmed Santos at San Diego State University in October 2008, according to the LA Times.

The defendants had faced the possibility of life in prison if they went to trial and lost so instead, they pleaded guilty to lesser charges of voluntary manslaughter and assault.

Schwarzenegger argued that Nunez should have received a lighter sentence than co-defendant Jett, because Jett had a prior record and Nunez did not, according to the LA Times.

The prosecution's theory that Jett had been the one who delivered the fatal knife blow also played into the governor's argument.

But it was never clear who stabbed Santos and prosecutors said that the law should treat the attackers with equal severity.

The Santos family (left) with Luis Santos (back row center) had been bitterly disappointed by Schwarzenegger's decision

Santos' mother Kathy, pictured with husband Fred in 2012, had anticipated Nunez's early release and she steadfastly believes a high-level political favor is sending him home

Fabian Nunez said the judge had been too harsh on his son.

He told the LA Times that he used his 'relationship with the governor to help my own son', adding that he would 'do it again'.

Jett is expected to serve out his original sentence.

The Santos family sued to overturn the shortened sentence, but without success.

In 2012, a Sacramento judge called the commutation 'repugnant' but legal.

And in 2015, an appeals court wrote that 'back-room dealings were apparent', but upheld Schwarzenegger's power to reduce the sentence.

Schwarzenegger said at the time that he acted because he thought the 16-year sentence was excessive, but he also acknowledged he was helping a friend.