(Transcript from World News Australia Radio - and a warning: this story contains material that could be disturbing to some people.)
Two men have now been found guilty of murder, but a former government minister says there is little authorities could have done to prevent the attack.
"I apologise that women had to witness this today, but in our land our women have to see the same. You people will never be safe! Remove your governments! They don't care about you."
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This is the voice of one of the men found guilty of murdering British soldier Lee Rigby in a London street,.
The gruesome attack unfolded on the 22nd of May this year, in daylight and in front of shocked onlookers - some filming the attack and the ensuing chaos on their mobile phones.
"Stay back! Stay back! Everyone stay back!"
It took a jury of eight women and four men just 90 minutes to return the guilty verdicts.
The court heard 29-year-old Michael Adebolajo and 22-year-old Michael Adbowale ran over Lee Rigby in their car near an army barracks in Woolwich.
They then hacked at his unconscious body with knives and a meat cleaver, trying to behead him.
In a police interview following the killing, one of the men said they had targeted Lee Rigby because he was carrying an army rucksack.
"Between us we decided that the soldier is the most fair target because he joins the army with an understanding that his life is at risk when he joins the army, you know?"
The court rejected the defendants' argument that they were, as they called themselves, 'soldiers of Allah', and ruled the killing of Lee Rigby was murder.
Following the verdict, Detective Inspector Pete Sparks read out a statement on behalf of Lee Rigby's family.
"This has been the toughest time of our lives. No-one should have to go through what we've been through as a family. We are satisfied that justice has been done. But unfortunately no amount of justice will bring Lee back. These people have taken him away from us forever. But his memory lives on in all of us, and we will never forget him."
Reacting to the verdict, British Prime Minister David Cameron said the attack on Lee Rigby had revealed a need to do more to combat terrorism on British soil.
"I think it also shows that we have to redouble our efforts to confront the poisonous narrative of extremism and violence that lay behind this, and make sure we do everything to beat it in our country."
UK intelligence authorities have been criticised over claims they had been in contact with Michael Adebolajo after he was caught trying to join the al-Shabaab terror group in 2010, but had placed no restrictions on his movements.
However, Mr Cameron's former Minister of State for Security and Counter Terrorism, Baroness Pauline Neville-Jones, says there was little they could have done to prevent the attack.
"It is obviously for them a test of how does the information that we have at our disposal stack up? We now have lots of information which has come in after the event. Not all of that, clearly, was known to authorities at the time. Now you're saying to me, should they have known that they should have known about him? That is the great problem."
She has also highlighted the difficulty of predicting and preventing similar attacks in future.
"With the kind of much more individually motivated and organised violence, it is harder for the authorities to follow it, because the traces that they can pick up are fewer. And we live in a free society, and we want to remain a free society. Only by intense surveillance would one be able to get to a stage where any little activity of a kind was immediately picked up."
The men are due to be sentenced in January.
