When Noah Green, a 25-year-old with no known history of violence, crashed his car into a barricade at the Capitol building in Washington DC, killing one police officer, before lunging at others with a knife, his own family were grappling for answers.
“My heart just sank,” his mother, Mazie Green, tells me. It was a murder, which, on the face of it, had nothing to do with American football.
But three years on and speaking publicly for the first time since that day, Mazie says she now believes it has everything to do with American football.
Green was shot dead by responding police, and in the days after the killing the FBI recommended that Mazie submit Noah’s brain to be analysed.
The diagnosis came back months later, indicating Green had stage one Chronic Traumatic Encephalopathy, more commonly known as CTE.
It’s a brain disease caused by repetitive blows to the head and it afflicts participants of contact sport, including American football. Symptoms include aggression, paranoia and problems controlling impulses.
“Noah took big hits,” Mazie says. At Alleghany High School in rural Virginia, Green had played in defence and was voted most valuable player and he later played for Christopher Newport University.
Teammates recall him being dependable and good-natured but Mazie says she noticed changes after he suffered several head injuries.
“He wanted to be tough, to prove himself,” Mazie says, “But there were changes. He would start wearing blankets around his head and I thought it was a teenage thing, but it was because he was so sensitive to the light. Then he would lose his keys and he forgot how to cook, prepare his meals.
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“After that, he started with these really bad headaches. One day he said ‘I don’t know what’s wrong with me, mum, I’ve lost 20 pounds…. I feel like I need to leave. I’ve got to get out of the country. They’re going to kill me, the FBI, they’re going to kill me.’
“He was paranoid.”
Officer William Evans, the police officer who Noah Green killed, left behind two young children. I ask Mazie if she has any message for his family.
“Officer Evans should not have died that day,” she says, “Noah should not have died that day. Someone has to take the responsibility for telling parents what to do if something’s just not quite right with those kids that are out there playing football for entertainment.”
Shannon Terranova, the former spouse of Officer Evans and mother of his two young children, said: “I want to be mindful of all who are impacted by this real-life horror; but it is difficult for me to comprehend any rationalisation of what happened to Billy and the events that led up to his death. I appreciate the efforts in bringing awareness to the long-term implications of bodily trauma caused by sports injuries. However, nothing can justify what Billy’s co-workers and family experienced, saw, and felt on April 2 2021, and every day since.”
Christopher Newport University declined to comment on Noah Green’s case. Alleghany High School did not respond to Sky News’s request for comment.
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1:16
How CTE is diagnosed
The question over whether CTE is linked to violent crime has come to the fore after numerous incidents of violent ex-football players.
Former San Francisco 49ers star Phillip Adams shot dead six people in an explosion of violence in 2021.
He murdered doctor Robert Lesslie, his wife, Barbara Lesslie, and two of their grandchildren, Adah, 9, and Noah, 5 at their home in South Carolina.
He also killed James Lewis and Robert Shook, who were working on an air conditioning unit at the house. Analysis of Adams’ brain showed he had severe CTE.
Kellen Winslow, another former NFL player, was convicted of multiple rapes in 2021.
His lawyer argued for his sentence to be reduced because of what he says was head trauma suffered on the football field. That potential mitigating factor was rejected by a judge.
Most experts say it is hard to say definitively what motivates someone to commit a crime, but the symptoms CTE causes could all contribute. More research into the causes of CTE and what factors might make some people more susceptible is under way.
Sky News was given access to the national sports brain bank in Pittsburgh, Pennsylvania where former professional and amateur American footballers are being urged to donate their brains for study.
Inside the histology laboratory, Dr Julia Kofler slices open a brain with a knife to show me the cross-section.
It is impossible to diagnose CTE with the naked eye so she takes a tiny sample of the brain tissue and loads it onto a slide so it can be analysed under the microscope.
I ask if she thinks there is a link between CTE and violent crime. “It’s really difficult to draw any conclusions about what motivates someone to commit a crime based just on their pathology,” she says, “but we certainly know that neurodegenerative diseases can cause all sorts of different behavioural changes and changes in executive function and judgement, so it certainly could have contributed.”
‘We watched him lose himself’
Karen Kinzle Zegel is one of those fighting for more research. Her son, Patrick Risha, had CTE and died by suicide aged 32. He had played American football throughout his childhood and at university.
“We watched him over 10 years, sadly lose himself, lose his dignity,” she says, “He was paranoid, he was argumentative.
“One time there was an incident with him and he said a homeless guy attacked him in Pittsburgh and he broke his hand punching this person. The rage he had was definitely scary.”
Through her organisation Stop CTE, Karen is campaigning for the brains of those who commit mass violence to be analysed for traumatic injury.
“Every time we’re looking at the symptoms like ‘they lost a job, they, broke up with their girlfriend’.
“Everybody wants to know why, why would someone take another person’s life? But if you’ve dealt with somebody whose brain became unwired you see the lack of empathy. They don’t care about other people, sadly.
“We’re not going back to the root cause, which could be a damaged brain.”
Concerns about brain injuries have contributed to the growth of flag football, a lesser contact sport which means fewer big hits and not an obvious danger.
But the popularity of the NFL as a spectator sport is enduring. Last week’s Super Bowl final was the most-watched TV event in American history.
But for its stars, the damage may already been done. The human cost of the richest sport league in the world is far too difficult to count.
Sky News contacted the NFL for comment about our report. In response, the NFL provided details of the funding they are giving into CTE-related research, mental health support and the physical safety measures they say they are taking in the sport.
It was the first time a US president had been convicted of or charged with a criminal offence.
Trump had tried to cover up “hush money” payments to a porn star in the days before the 2016 election.
When Stormy Daniels‘ claimsof a sexual liaison threatened to upend his presidential campaign, Trump directed his lawyer to pay $130,000 (£102,000) to keep her quiet.
The payment buried the story and he later won the presidency.
Trump denied the charges and said the case was politically motivated. He also denied the sexual encounter took place.
New York State Supreme Court Justice Juan Merchan today delayed the sentencing, which had been due to take place on Tuesday.
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The office of district attorney Alvin Bragg had asked the judge to postpone all proceedings until Trump finishes his four-year presidency, which starts on 20 January.
Trump’s lawyers say the case should be dismissed because it will create “unconstitutional impediments” to his ability to govern.
Responding to Friday’s decision, a Trump campaign spokesman said: “The American People have issued a mandate to return him to office and dispose of all remnants of the Witch Hunt cases.”
The judge set a 2 December deadline for Trump’s lawyers to file their motion, while prosecutors have until 9 December to respond.
He did not set a new date for sentencing or indicate when he would rule on any motion to throw out the case.
Even before Trump’s win in this month’s election, experts said a jail term was unlikely and a fine or probation more probable.
But his resounding victory over Kamala Harris made the prospect of time behind bars or probation even less likely.
Trump, 78, was also charged last year in three other cases.
One involved him keeping classified documents after he left office and the other two centre on alleged efforts to overturn his 2020 election loss.
A Florida judge dismissed the documents case in July, the Georgia election case is in limbo, and the Justice Department is expected to wind down the federal election case as it has a policy of not prosecuting a sitting president.
Trump last week nominated his lawyers in the hush money case, Todd Blanche and Emil Bove, for senior roles in the Justice department.
When he re-enters the White House, Trump will also have the power to shut down the Georgia and New York cases.
Donald Trump has pledged for years to surround himself with ultra-loyalists who can mould his government to his vision without barriers.
That’s precisely why he picked Matt Gaetz. Now he’s out, Pam Bondi is in and she’s equally loyal.
Gaetz was uniquely unpopular on Capitol Hill but ultra-MAGA and ultra-loyal to the president-elect.
He was chosen by the president-elect to do his bidding inside the Justice Department as attorney general.
Critics called his pick “a red alert moment for democracy” and the man a “gonzo agent of chaos” – language that would surely only affirm Trump’s decision in his own proudly disruptive mind.
If it wasn’t for the fact that the president-elect is himself a convicted felon, and a man found liable in a civil court of his own sexual offences, the prospect of Gaetz, with all his baggage, making it through the nomination process would have seemed remote.
But Donald Trump’s return to the White House suggested anything is possible.
And so, beyond his loyalty, Gaetz was Trump’s test for his foot soldiers on Capitol Hill. How loyal were they? Would they wave through anyone he appointed?
It turns out that Gaetz, and the storm around his private life, was too much for a proportion of them.
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At least five Senate Republicans were flatly against Matt Gaetz’s confirmation. We understand that they communicated to other senators and those close to Trump that they were unlikely to be swayed.
They included the Republican old guard like Senator Mitch McConnell.
Beyond the hard “no” senators, there were between 20 and 30 other Republicans who were very uncomfortable about having to vote for Gaetz on the Senate floor.
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2:23
Trump pick Matt Gaetz withdraws
The key question is whether Gaetz was Trump’s intentional wild card crazy choice that he knew, deep down, would probably never fly.
Was Gaetz the candidate he had accepted would be vetoed by senators – who would then feel compelled to wave the rest of his nominees through?
Will Pete Hegseth’s alleged sexual impropriety concern them as they consider the suitability of the former Fox News host and army major to run the Department of Defence?
What about Tulsi Gabbard, the candidate Russian state TV calls ‘our girl’, and the appropriateness of her running America’s intelligence agencies?
These are all appointments that the politicians on Capitol Hill must consider and confirm in the weeks ahead.
We don’t yet know who Trump will choose to direct the FBI.
There are some names being floated which will make the establishment of Washington shudder but then that’s precisely why Trump was elected. He is the disrupter. He said so at every rally, on repeat.
He was quick to pivot to another name to replace Gaetz.
Bondi is the former attorney general of Florida. Professionally she is in a different league to Gaetz. She’s been a tough prosecutor, with a no-nonsense reputation.
She is also among the most loyal of loyalists. Her attachment to Trump stretches way back.
I first came across her in Philadelphia in November 2020 when she was among Trump surrogates claiming the election back then had been stolen from them by Joe Bidenand the Democrats.
She was a key proponent of the false claims the election had been rigged and Trump was the rightful winner.
The court cases concluding that was all nonsense didn’t seem to convince her.
Now she is poised to head up the Department of Justice as the country’s top law enforcement official.
Within hours of taking office, president-elect Donald Trump plans to begin rolling out policies including large-scale deportations, according to his transition team.
Sky News partner network NBC News has spoken with more than half a dozen people familiar with the executive orders that his team plans to enact.
One campaign official said changes are expected at a pace that is “like nothing you’ve seen in history”, to signal a dramatic break from President Joe Biden’s administration.
Mr Trump is preparing on day one to overturn specific policies put in place by Mr Biden. Among the measures, reported by sources close to the transition team, are:
• The speedy and large-scale deportations of illegal immigrants
• Ending travel reimbursement for military members seeking abortion care
• Restricting transgender service members’ access to gender-affirming care
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But much of the first day is likely to focus on stopping illegal immigration – the centrepiece of Trump’s candidacy. He is expected to sign up to five executive orders aimed at dealing with that issue alone after he is sworn in on 20 January.
“There will without question be a lot of movement quickly, likely day one, on the immigration front,” a top Trump ally said.
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“There will be a push to make a huge early show and assert himself to show his campaign promises were not hollow.”
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2:23
Donald Trump ally Matt Gaetz has withdrawn his name from consideration to be the next US attorney general.
But Mr Trump’s campaign pledges also could be difficult to implement.
Deporting people on the scale he wants will be a logistical challenge that could take years. Questions also remain about promised tax cuts.
Meanwhile, his pledge to end the war between Russia and Ukraine in just 24 hours would be near impossible.
Even so, advisers based at Mr Trump’s Mar-a-Lago resort or at nearby offices in West Palm Beach, Florida, are reportedly strategising about ending the wars in Ukraine and the Middle East.
Following his decisive victory on 5 November, the president-elect has moved swiftly to build a cabinet and senior White House team.
As of Thursday, he had selected more than 30 people for senior positions in his administration, compared with just three at a similar point in his 2016 transition.
Stephen Moore, a senior economic adviser in Mr Trump’s campaign, told NBC News: “The thing to realise is Trump is no dummy.
“He knows he’s got two to three years at most to get anything done. And then he becomes a lame duck and we start talking about [the presidential election in] 2028.”