Donald Trump's impeachment trial has been shown new footage of violence he is accused of inciting
In one clip, Senator Mitt Romney is seen running as police warn him of the advancing mob
The deadly riot at the US Capitol was an attempt by Trump supporters to stop the election result being certified
Democratic prosecutor Jamie Raskin told the trial the mob "was sent here by the president"
Trump's lawyers have said he has freedom of speech to declare the election as fraudulent
Seventeen Republicans will need to turn against their former president to convict him
WARNING: Some of the video evidence could contain upsetting scenes and foul language
With a bang of a gavel, the second day of former President Donald Trump has begun.
Prosecutors will once again try to prove that Trump incited the deadly 6 January riots at the US Capitol.
We’ll be here all day providing live coverage as the political drama unfolds.
You can watch events unfold in the Senate chamber on the BBC's own livestream. Just click 'Play' in the image at the top of this page.
Warning: Some of the video evidence is likely to contain some upsetting scenes and foul language.
Robin Levinson King, BBC News
Got questions about the impeachment trial – what’s happened so far and where it’s headed? I’ll be talking to BBC Washington correspondent Anthony Zurcher about what lies ahead for the former president’s impeachment trial on Facebook Live at 16:30 GMT (11:30 EST). Tune in to hear his thoughts on the first day of the proceedings, what to expect on day two, and what is yet to come.
Image source, ReutersOne of the Republicans who voted to impeach Trump in the House of Representatives in January, Adam Kinzinger, has told ABC News he thinks it's possible - but unlikely - that more Republicans in the Senate will vote to convict the former president.
He told the US news network that if the vote were to be held in private, it would "certainly" pass.
Remember, two-thirds of the 100-member Senate must vote to back a guilty verdict in order to convict Trump. Democrats currently hold 50 seats, and need at least 17 Republicans on their side.
On Tuesday, six Republican senators voted in favour of moving the trial forward. They were: Lisa Murkowski of Alaska, Bill Cassidy of Louisiana, Susan Collins of Maine, Ben Sasse of Nebraska, Pat Toomey of Pennsylvania and Mitt Romney of Utah.
This suggests the Democrats won't get enough support for a conviction.
Image source, Getty ImagesAs we reported yesterday, President Joe Biden has said very little about the trial so far and kept to his executive schedule.
On Wednesday, Biden will instead be making his first visit to the Pentagon since taking office, and meeting new Secretary of Defence Lloyd Austin - the first African American appointed to the role.
Biden's visit comes at time when the military is under pressure to address far-right extremism and racism among its troops. The issue came to the fore after the deadly Capitol riots on 6 January, with about 10% of those charged found to have ties to organised far right militias or other right-wing extremist groups.
Find out more here on what we know about those arrested
Image source, Getty Images(No, it's not whether Trump will be convicted...)
If you were watching closely yesterday, you may have spotted one of Trump's defence lawyers, David Schoen, touching his head every time he took a sip of water. This got plenty of people talking - and asking questions - on Twitter...
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Daniel Goldman, the lead Democratic lawyer for Trump's first impeachment trial last year, stepped in to explain.
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Asked by a CNN reporter why he wasn't wearing a kippah, Schoen said: “I just wasn’t sure if it was appropriate, frankly..I didn’t want to offend anyone.”
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It's safe to say it's probably not what Schoen wanted people to focus on after delivering his opening defence remarks in the trial.
Here are some images of day one of the trial of former President Donald Trump.
Image source, AFPA group of nine Democrats have been tasked with prosecuting the case before the Senate - they are known as impeachment managers
Image source, ReutersThe lead manager, Jamie Raskin, was brought to tears as he recounted fear for his family's safety during the riot after he was separated from his visiting daughter
Image source, ReutersTrump lawyer Bruce Castor's meandering defence presentation was met with a critical reception - even by some Trump allies
Image source, EPABill Cassidy was one of six Republicans to vote with Democrats in favour of moving Trump's trial forward. He said the house prosecution had "made a compelling, cogent case and the president's team did not"
Image source, ReutersThere is a heavy security presence outside the Capitol, with National Guard members stationed outside the building since the 6 January siege - the deadly riots that led to Trump's trial today
Image source, ReutersDonald Trump's lawyers stole the show at the opening of his impeachment trial at the US Senate - but not in a way that will have pleased the former president.
Indeed, Mr Trump was unhappy, according to media reports, with the performance of Bruce Castor, whose 48-minute address appeared to have very little substantive content.
The defence was roundly criticised by Republican allies and critics of Mr Trump.
Alan Dershowitz, who defended Mr Trump in his first impeachment, said he could not understand what Castor had been hoping to achieve.
"There is no argument. I have no idea what he's doing. I have no idea why he's saying what he's saying," the high-profile lawyer told conservative TV channel Newsmax.
Read more on Castor and reaction to his opening defence here.
Trump lawyer: 'Overriding emotion is to cry for the US Constitution'
Donald Trump's lawyer David Schoen argued before senators on Tuesday that this second impeachment trial was unconstitutional.
Schoen bemoaned the effort, which, he said, made him "want to cry" at the damage being done to the constitution.
Raskin: 'They thought they were going to die'
On Tuesday, Democratic congressman Jamie Raskin shared an emotional story about his daughter fearing for her life on 6 January during the Capitol riots.
Mr Raskin said his 24-year-old daughter Tabitha did not want to return to the Capitol building after experiencing that day.
Anthony Zurcher
BBC North America reporter
Image source, Reuters“It would take 17 Republicans joining all the Democrats to successfully convict Donald Trump in the Senate. All but a handful of the Republicans seem to view the entire trial as unconstitutional, so the Democrats’ best strategy may be to make an acquittal vote, even if it is a fait accompli, as uncomfortable as possible.
They'll do their best to remind the 100 senators of the fear, confusion and anger they felt on 6 January, as they fled the chamber in the face of an angry mob.
They'll try to lay responsibility for the riot at the feet of a president who spent two months questioning the outcome of the election and chose to hold a protest rally within walking distance of the Capitol on the day Congress gathered to certify that election.
And then they'll have to hope that history - and American voters - are willing to assign guilt, even if the Senate isn't.
It's easy to get lost in the legalese and procedural elements of the trial, so as a quick reminder of why we're running this live blog - here's a run-down of the case against former President Trump:
And his defence?
Read more on the case for the prosecution and defence here.
Trump impeachment: What the Proud Boys did before president's speech
We do not know what new footage senators will be shown today, but it's clear prosecutors will hope it adds to understanding the shock of the storming of the Capitol last month - and event that left five people dead, over 100 police officers injured and millions of dollars in damage to the building.
The impeachment trial comes down to this one question: Did Donald Trump incite the insurrection of the Capitol on 6 January?
No matter what the Senate decides, the repercussions of that day tell us a frightening truth about the divided American public.
BBC Newsnight's Gabriel Gatehouse takes a closer look at the movements of far-right extremists on the day of the riot - and how the Proud Boys were already heading to the Capitol before President Trump had even spoken at his rally.
But the vast majority of those arrested for their actions on 6 January did not have affiliations to such groups before the siege.
Experts say that many more Americans have become radicalised since the election and warn that the risk of political violence could grow.
A month-long search for offenders has resulted in charges against a reported 221 people,which you can read about here.
The Democrats leading the case to convict Trump say they will use "extraordinary" footage of the Capitol riots that has until now not been made public, filmed on the building's security cameras.
“It will provide new insight into both the extreme violence that everyone suffered, the risk and the threat that it could have led to further violence to many but for the brave actions of the officers and shows really the extent of what Donald Trump unleashed on our Capitol,” one aide said, quoted by CBS News.
No further details of the video were given, so we'll have to wait until proceedings begin in just under two hours.
Image source, Getty ImagesDemocrats opened their case against Donald Trump on Tuesday by showing a chilling 13-minute video from the Capitol riots which US senators watched in stunned silence.
The goal of the prosecution was clear: keep the focus squarely on Mr Trump, linking him and his words to the deadly riot that followed.
They also wanted to ensure the jury of senators - and, importantly, Americans watching at home - saw the brutal violence of the mob, the panic of police, and the fear of lawmakers.
The montage opens on Mr Trump speaking to a cheering crowd on 6 January before moving through clips showing the horror of the day - played out in excruciating, expletive-laden detail.
Read more on what was in the video here
You can watch our own video piece below:
When a mob stormed the US capitol
Image source, EPAWe are likely to hear more from the Democrat leading the prosecution's case, Jamie Raskin, on Wednesday
Now the debate on whether the trial is constitutional is over, the Democrats will begin making their opening arguments in the case and presenting evidence.
What can we expect in the next few days?
Both Republicans and Democrats are keen on a speedy trial, US media report, so we could see a vote on conviction as early as this weekend if there are no witnesses to hear from.
Read more on what's coming up here
Image source, Getty ImagesHello and welcome to our live coverage of day two of Donald Trump's trial in the US Senate. Tuesday saw his defence team lose a vote seeking to halt the trial on constitutional grounds, as well as questions raised over the performance of his lawyers. The former president himself was said to have expressed his anger whilst watching the proceedings on television.
Here's a quick recap of yesterday's events:
Throughout the day, we'll be bringing you all the latest updates as they happen, as well as background and context to help keep you fully across the story.