Nigel Farage has accused Keir Starmer of 'emboldening' hate marchers after recognising Palestine as a state.
The Reform UK leader today condemned pro-Palestinian 'hate marches' and accused activists of 'celebrating' the Manchester synagogue terrorist attack.
Farage also said yesterday's attack was an example of 'broken Britain' and 'societal breakdown' in a video message posted to social media on Friday.
In it, he said protesters who turned out in Whitehall last night in support of a flotilla carrying aid to Gaza led by Greta Thunberg had been 'celebrating' the attack at the Heaton Park Congregation Synagogue in Manchester.
Two people died and another four were injured, three seriously, after terrorist Jihad Al-Shamie, 35, drove his car at members of the public outside the synagogue before stabbing multiple people.
Armed police officers rushed to the scene and had shot Al-Shamie, who was wearing a 'non-viable' belt which appeared to be a suicide vest, within seven minutes.
It was revealed today that one of those to have died in the attack was shot by armed police officers, as was a second victim who remains in hospital.
The Home Secretary Shabana Mahmood criticised pro-Palestine activists who went ahead with a protest last night despite the atrocity in Manchester.
Hundreds of activists have gathered outside the gates of Downing Street in Westminster as part of a protest against the detention of members of the Global Sumud Flotilla, which included Greta Thunberg.
Farage took to social media on Friday to accuse the Prime Minister, Sir Keir Starmer , of 'emboldening' protesters by recognising the state of Palestine last month, amid catastrophic humanitarian conditions in Gaza
Police scuffle with protesters at the south end of Whitehall following a protest in Parliament square on Thursday
Police were seen scuffling with protesters at the south end of Whitehall following yesterday's protest in Parliament Square
Activists were seen clashing with police as the rally outside Number 10 descended into mayhem, with 40 people arrested - including six for allegedly assaulting police officers, the Metropolitan Police said.
In Manchester, just four miles away from the Heaton Park Synagogue tragedy, hundreds of pro-Palestine supporters marched on Manchester Piccadilly Station.
And one woman attending a march last night raged she 'doesn't give a f*** about the Jewish community'.
Speaking ahead of a further planned protest in support of proscribed group Palestine Action, organised by Defend Our Juries, Farage posted a video to social media condemning the plans.
He said the 'only way' to describe a planned protest in London on Saturday was 'a hate march', adding that he felt 'more worried about the state of broken Britain than I ever have before.'
Farage said: 'The scenes of Jewish people being butchered on the streets of Manchester yesterday I think have shocked many of us deeply, deeply to the core.
'I want to extend, on behalf of myself and our party our absolutely most sincere condolences to all of those affected.'
He added: 'Within just a few hours of this horrific incident we saw in London, Glasgow and elsewhere, pro-Palestinian flags on the streets, people out, previously unplanned, demonstrating. But here's the truth of it, they weren't demonstrating, they were actually celebrating.
Melvin Cravitz, 66, has been named as one of those who died during Thursday's terror attack
Adrian Daulby (pictured), 53, was also killed in the attack, which left four others wounded
Prime Minister Sir Keir Starmer (left) visited the scene of Thursday's terror attack this morning accompanied by his wife, Victoria (centre)
Police officers were pictured leading a woman, wearing a face mask, away from the protest yesterday
Met Police officers have been seen scuffling with protesters, some of whom wore face masks and scarves, outside Westminster
'I can't even imagine we've ever seen such vile scenes on our streets, certainly not in my lifetime.
'I hope all of you watching this video are outraged. Outraged, and frankly frightened.
'This is broken Britain. This is evidence of societal breakdown. It is deeply worrying and very frightening.'
Saturday could see one of the largest-ever gatherings at Trafalgar Square in central London in support of Palestine Action, which was proscribed as a terror group in July. More than 1,500 people have pledged to descend on the capital in support of the group, risking arrest as they do so.
Their action will come less than a week after 66 people were arrested at a rally supporting Palestine Action during the first day of Labour's party conference in Liverpool.
Last night, Chief Rabbi Sir Ephraim Mirvis said the terror attack had come following an 'unrelenting wave of Jew hatred on our streets, campuses, on social media and elsewhere'.
He said: 'This is the day we hoped we would never see, but which deep down, we knew would come.'
The Met has appealed to protest group Defend Our Juries to cancel is planned march in the capital this weekend.
Jihad Al-Shamie, 35, who was shot dead minutes after he targeted Heaton Park Synagogue in Manchester yesterday. It is believed he was a father and is pictured holding a child
Al-Shamie was caught on camera armed with a knife trying to get into the synagogue moments before he was shot by armed police
The scene outside the Heaton Park Synagogue, pictured early on Friday morning, as a police investigation continues into the attack
The scene outside the Heaton Park Synagogue, pictured early on Friday morning, as a police investigation continues into the attack
Forensic officers work at the Heaton Park Hebrew Congregation Synagogue on Friday
The Met Police hit out at pro-Palestine activists for defiantly vowing to stage their marches this weekend, saying it will 'draw resources away' from the capital 'when they are needed most'
A letter from the force shared by the group raised fears about the amount of police resources the protest would divert at a time when 'visible reassurance and protective security' is needed in communities across London.
But the organisation, which has led demonstrations against the terrorist ban on Palestine Action, has defiantly railed against the call.
'Today, the Metropolitan Police wrote to us to ask that we postpone Saturday's mass protest in Trafalgar Square, citing 'significant pressure on policing',' it said on social media site, X.
'Our response in short: Don't arrest us then.'
But in a fiery response, the Met hit back, accusing the campaign group of trying to 'encourage mass law breaking'.
The force tweeted: 'The horrific terrorist attack that took place in Manchester yesterday will have caused significant fear and concern in communities across the UK, including here in London.
'Yet at a time when we want to be deploying every available officer to ensure the safety of those communities, we are instead having to plan for a gathering of more than 1,000 people in Trafalgar Square on Saturday in support of a terrorist organisation.
'By choosing to encourage mass law breaking on this scale, Defend Our Juries are drawing resources away from the communities of London at a time when they are needed most. We urge them to do the responsible thing and delay or cancel their plans.'
And Home Secretary Shabana Mahmood agreed organisers should cancel the protest.
Speaking to Sky News, Ms Mahmood said those who gathered after the attack were behaving in a 'fundamentally un-British' and 'dishonourable' way.
And with further demonstrations on the horizon, Ms Mahmood urged those who plan on protesting to show 'some humanity' and 'give the Jewish community here a chance to process what has happened'.
As she called on activists to allow Jews to 'begin the grieving process', the Home Secretary told GB News: 'I am very disappointed that some of the organisers haven't heeded the call to step back.
'I would still call on people to show some love and some solidarity to the families of those who have been murdered and to our Jewish community.'