Sickening footage of a seven-year-old Palestinian girl 'stabbing' Jews was taken at a 'festival of hate' partly funded by a UK charity supported by Jeremy Corbyn and Labour MPs, MailOnline can reveal.

The film of the gruesome children's play was broadcast on Hamas TV last week, with the British charity’s logo clearly visible on a banner behind the stage.

The little girl, dressed in a hijab, is seen pretending to stab two boys dressed as Israeli soldiers, who respond by 'shooting' her. Then, amid cheers from the baying crowd, a boy dressed as a masked terrorist massacres the soldiers with a replica semi-automatic weapon.

This shocking display of brainwashing took place last week as part of ‘Palestine Festival for Children and Education’ – and the festival was funded by Interpal, which is widely supported by Labour MPs.

The Charity Commission said it is investigating ‘as a matter of priority’. MailOnline's revelations will cause intense embarrassment to the Labour leader, who is facing a storm of criticism for not acting strongly enough to quell anti-Semitism in his party. His office declined to comment last night.

Brainwashing: The girl looks to adults for encouragement as she acts out the stabbing

Vicious: A young girl, dressed in a hijab and holding a dagger, hides a knife behind her back

Terror: A boy dressed as a masked terrorist, mounts an 'attack' with a toy gun. The Interpal logo is circled

MailOnline has learnt that Interpal donated £6,800 to Gaza’s ‘festival of hate’, which was organised by the University College of Applied Sciences in Gaza City and ended last week.

The charity said it did not support the play but instead 'hosted some activities in Gaza City, as part of the larger event', adding that it does not condone violence. But MPs dismissed this explanation as ‘not very convincing’.

The Labour leader has spoken at Interpal fundraisers, and has appeared in a promotional video for the charity.

In 2013, he and his wife accepted a £2,800 tour of Gaza funded by Interpal. He has called the organisation’s chairman – a notorious Islamic hardliner who has said adulterers should be stoned – a ‘very good friend’, and has shared a platform with a range of extremists at Interpal events (see graphic below).

The charity has been designated a ‘specially designated global terrorist organisation’ by the United States, which says it 'facilitates the transfer of tens of millions of dollars a year to Hamas'. Interpal officials have been repeatedly photographed with the Hamas leadership in Gaza.

Interpal is contesting the designation in the American courts.

Sir Eric Pickes MP said: 'The Leader of the Labour Party has green-lit radicalisation and incitement to violence via his well-documented involvement with notorious hate preachers and Interpal, which is rightly designated in the US as a global terrorist organisation.

'Time is running out for Jeremy Corbyn to give leadership to his Party. His lack of decisive action in stamping out anti-Semitism is sickening. The public demands and deserves an unequivocal condemnation of anti-Semitism and a renouncement of the repugnant Interpal.'

Extreme: Jeremy Corbyn, circled, appears alongside many extremists at an Interpal event in 2013

Tour: Jeremy Corbyn visits Gaza in 2013 on a tour paid for by Interpal, costing £2,800

Solidarity: Jeremy Corbyn poses with Interpal's chairman and senior leadership in Gaza in 2013

A 2009 investigation by Britain's Charity Commission found no evidence to link Interpal to Hamas, but Andrew Hind, the Commission's Chief Executive said, 'our report does not give the charity a clean bill of health'.

Last night, furious MPs demanded that the a fresh inquiry is launched.

‘The reality is that many who see themselves as defenders of the Palestinian cause are far too close to those holding deeply racist and anti-Semitic views,’ said Andrew Percy, MP for Brigg and Goole.

‘It is absolutely disgusting that any charity should be involved in a festival of hate that radicalises children to go and kill innocent Jews.

‘This is yet another example of Jeremy Corbyn’s dodgy friends who are associated with very extreme individuals. It shows what a problem Labour has with anti-Semitism. They have got to start getting serious.’

A spokesman for the Charity Commission said that it was urgently investigating MailOnline’s revelations. ‘The Commission is aware about concerns about the contents of this video,’ he said. ‘We are assessing the material as a matter of priority before deciding what regulatory action may be required.’

Interpal sought to distance itself from the glorification of violence last night, claiming that its money only funded other parts of the festival.

‘Our logo was used in various materials for the festival, as we held our own activities as part of the larger umbrella of the festival in Gaza City,’ a spokesperson said. ‘We did not support this particular play and did not have any involvement with it.’

MPs did not find Interpal’s explanations persuasive. ‘I don't think that’s a very convincing defence,’ Jacob Rees-Mogg MP told MailOnline. ‘Interpal is not a reputable charity. This is deeply, deeply concerning.

'Labour MPs nod when the Prime Minister says something must be done to tackle anti-Semitism, but now is the time for action.’

Miles of smiles: Jeremy Corbyn poses with Interpal officials and supporters in 2013

Comrades: Jeremy Corbyn and his 'good friend' Ibrahim Hewitt, who has said adulterers should be stoned

Cornyn’s involvement with Interpal stretches back many years and connects him to a variety of extremists.

He has admitted being a personal friend of Interpal's chairman, Ibrahim Hewitt, 58, a controversial Islamic hardliner who runs a private Muslim school in Leicester that cited sharia law in its child protection policies.

Speaking at a pro-Palestinian event in East London in February 2013, Corbyn said: ‘I’ve got to know Ibrahim Hewitt, the Chair, extremely well, and I consider him to be a very good friend, and I think he’s done a fantastic job.’

Hewitt gained notoriety when he wrote a pamphlet branding homosexuality a ‘great sin’, comparable to paedophilia and incest, which should be ‘severely punished’ under Islamic law. It also said that adulterers should be 'stoned to death’.

In 2014, Hewitt was banned from speaking at an Oxfam event as a result of the homophobic views that he has expressed.

The preacher has since said that he was simply setting out the view stated in Islamic texts, and claimed, ‘these do not mean that I would advocate such actions'.

CORBYN AND THE INTERPAL EXTREMISTS Jeremy Corbyn delivered a speech at a London event entitled 'Palestine: Journey Through The Ages' in February 2013. His fellow speakers included: Ibrahim Hewitt, chairman of Interpal, who wrote a pamphlet comparing homosexuality to paedophilia and incest and saying that adulterers should be 'stoned to death' Sheikh Zahir Mahmood , who has been filmed saying, ‘Hamas are not terrorists, they are freedom fighters’ Dr Swee Ang , a pro-Palestinian activist who once sent emails imploring people to watch an anti-Semitic video presented by David Duke, a former Ku Klux Klan grand wizard. She claimed she did not know who he was Uthman Lateef , who was banned from speaking at another 2013 event, organised by Education Aid for Palestinians (EAP), because of his ‘anti-democratic and homophobic preaching’ Hamza Tzortzis , who has been filmed giving a speech in which he said, ‘we as Muslims reject the idea of freedom of speech, and even the idea of freedom’ Yvonne Ridley , a British Muslim convert who has been filmed chanting, ‘victory to Hezbollah! Victory to Hamas! Victory to the Palestinians! Victory to the Intifada! Allahu Akhbar!’, and claiming that ‘drinking Coca-Cola is like drinking the blood of Palestinian children’ Dr Daud Abdullah , who , who signed a declaration in support of Hamas and military action, led a boycott of Holocaust Memorial Day, and was accused of advocating attacks on the Royal Navy Advertisement

Corbyn's declaration of friendship for Hewitt came as he shared a stage with a number of Britain’s most notorious Islamist figures at an event organised by Interpal in East London in February 2013.

These included those who defend militant extremists; condemn homosexuality; ‘reject the idea of freedom of speech’; and are accused of advocating attacks on the Royal Navy.

Leaked Wikileaks cables showed how the CIA was concerned at UK political support for Interpal in 2010. The American intelligence agency said it was 'politically connected and regularly pressed elected leaders on its behalf'.

Last year, MailOnline revealed Corbyn’s association with Paul Eisen, a well-known Holocaust denier. Subsequently, the Labour leader was forced to admit that there was a connection but denied that he knew of his controversial views.

‘At that time I had absolutely no evidence whatsoever that Paul Eisen was a Holocaust denier,’ he said.

Footage of the horrific play, which was filmed in Gaza and broadcast on Hamas TV, shows the children looking to their teachers and parents for encouragement as they act out the murderous scene, with the Interpal logo proudly displayed in the background.

As the girl attacks, a voice on the loudspeaker says: ‘Do not be angry with her, she is your blood, your flesh and your honour.’

When the boy dressed as a terrorist creeps up to the stage as pounding music is played. To the cry of, ‘rejoice, the sniper has arrived!’ he shoots the ‘soldier’ dead and releases a boy posing as a prisoner in a makeshift cage.

The Labour Party has been under increasing pressure to root out anti-Semitism from its membership. Yesterday Naz Shah, a Muslim Labour MP, was suspended after it emerged that she suggested that Israel should be ‘relocated’ to the United States, and tweeted ‘everything Hitler did in Germany was legal’. Two Labour peers accused Corbyn of 'dithering' in his response.

Earlier this month, Labour MP Louise Ellman, who is Jewish, said some members are ‘allowed to get away with posting anti-Semitic comments’, adding that she had ‘raised this in parliamentary meetings’.

Moreover, in March, Vicki Kirby, Labour’s vice-chair, was suspended for anti-Semitic tweets including suggesting that Jews have ‘big noses’.

She had been ejected from the party in 2014 but later reinstated – before the leadership buckled to pressure and expelled her a second time.

Appearing on the Andrew Marr show on Sunday, Corbyn said: ‘Anti-Semitism is absolutely abhorrent and wrong… We have suspended and we will suspend any member who behaves in that way.’

An Interpal spokesperson said: ‘We did not support this particular play and did not have any involvement with it. Interpal deplores any activity involving children and violence.

'This play is totally contrary to our ethos, and our focus is on getting children away from the politics and trauma of occupation and to focus on being children.

'This year we expended funds on hosting some [Festival] activities in Gaza City, as part of the larger event, for children that we support through our Children Welfare Programmes.

'This included outdoor games, food, T-shirts and also rewards for teachers for their good work over the year and was managed by our Gaza Field Office.