One of the killers of British soldier Lee Rigby has been told by a judge he will die in prison and the other has been jailed for a minimum of 45 years.
There were dramatic scenes in court as the two murderers fought with guards in the dock as sentencing began.
Michael Adebolajo shouted at the judge, and he and co-killer Michael Adebowale were both restrained and pinned down by several guards at the Old Bailey in London.
The pair were taken back down to the cells and Mr. Adebolajo could be heard screaming from downstairs.
Sky's Home Affairs Correspondent Mark White saw what happened at the Old Bailey.
The judge, Mr. Justice Sweeney, then sentenced the men in their absence from the courtroom.
Adebolajo (29) was given a whole-life term and Adebowale (22) was jailed for at least 45 years.
They ran the soldier down before hacking him to death in the Woolwich area of south-east London last year.
Rigby was attacked on the street in broad daylight last year
They both claimed they were "soldiers of Allah" and were motivated by the plight of Muslims abroad to carry out the killing, and have shown no remorse.
The struggle in the dock was triggered when the killers, both wearing Islamic robes, reacted angrily to comments that Mr. Justice Sweeney made about their extremist beliefs.
He told them "You each converted to Islam some years ago. Thereafter you were radicalised and each became an extremist, espousing views which, as has been said elsewhere, are a betrayal of Islam".
Adebowale protested that this was a lie and his accomplice joined in shouting "Allahu Akbar" and hurling abuse at the prison guards who grappled him to the ground.
The soldier's family were visibly distressed, and one relative needed medical treatment.
Extremist views compared to alcoholism
In sentencing, Mr. Justice Sweeney said they had "butchered" Mr. Rigby. He said Adebolajo concentrated on his neck, while Abdebowale concentrated on his torso.
He described the killing as a bloodbath and described how they wanted to become "martyrs" and gain a place in paradise.
Earlier, as the sentencing hearing began, Mr. Adebolajo refused to stand as his name was read out and Mr. Adebowale stood to confirm his name.
Victim impact statements were read out to the court, including one from Rigby's widow, Rebecca.
"I was also suddenly living in the public gaze," she said.
"I couldn't go anywhere or do anything. I felt like I didn't want to go on. I saw people nudging and looking at me if I walked down the street. I know my son will grow up and see images of his dad that no son should have to endure and there's nothing I can do to change this" she added.
Adebolajo's barrister, David Gottlieb, told the court "However shocking and terrifying a crime, a whole-life term can never be justified when the full circumstances of the offence known at the time...show that the offender is not so deprived of all human dignity that he has no possibility of atonement in the future"
He compared Adebolajo's extremist views to "alcoholism" or a severe "psychiatric" illness. "Whatever his expressed views or wishes, he's not somebody who's incapable of change" he added.
Abbas Lakha, Adebowale's defence barrister, said his client's psychiatric condition should be taken into account in his sentencing.
He argued Adebowale played a "lesser role" in the killing and that he was a passenger in the car which he said he did not know was going to be driven at Mr. Rigby.