The scale of anti-semitism within Labour has prompted training sessions for 1,200 party members in a drive to stamp out the vile online abuse.

Labour’s Jewish wing is holding the events that use a slide show of hate-filled messages posted on the internet by the party’s own activists.

The Daily Mail has chosen to reproduce the comments despite their shocking content in order to highlight the enormity of the problem.

The abuse includes one Labour member describing Jews as a ‘corrupt master race’ controlling sex-trafficking, pornography and wars worldwide.

Another wrote: ‘Every f****** Jew that died in the Holocaust was a blessing.’

One councillor suggested there was a worldwide Jewish conspiracy and that Israel wanted to commit atrocities across the whole world.

Last night MP John Cryer, who is chairman of the Parliamentary Labour Party, said that the tweets were ‘stomach-churning’ and ‘awful’.

Jeremy Corbyn was forced to deny he was leading the new ‘nasty party’, and the Labour leader of Brighton council threatened to ban the party from holding its conference in the town unless it cracked down on racism amongst activists

‘I have no idea why people who hold these views would want to be a member of the Labour Party,’ he said.

‘The Labour Party has been at the forefront of confronting Nazism right from the 1930s – so what possesses these people to become members I don’t understand. I have seen tweets like this at our disciplinary body and what I know is these people are quickly suspended and expelled.’

The Jewish Labour Movement (JLM) held a training session at September’s Labour conference – itself blighted by accusations of anti-semitism – in a doomed attempt to nip the problem in the bud. Some 1,200 members have attended the official Labour Party sessions, which are carried out by the JLM, in the past 14 months.

Slides from the event obtained by the Mail – which were not leaked by the JLM – show party members have had to be told anti-semitism means ‘making mendacious, dehumanising, demonising or stereotypical allegations against Jews as such or the power of Jews as a collective’.

Members were told this includes commenting on the ‘myth of a world Jewish conspiracy’, ‘Jews controlling the media’ or ‘holding Jews collectively responsible for actions of the state of Israel’.

They were shown examples of anti-semitic abuse hurled at JLM chairman Luciana Berger on Twitter, and JLM member Rhea Wolfson.

The event said that among elected Labour representatives ‘denial of anti-semitism is particularly common’, as was the idea that ‘Jewish people are wealthy or interested in wealth or finance’.

A message was shared from the online Labour Party Forum, showing a man with a large nose reading the BBC Six O’Clock News alongside the caption: ‘B***** BBC is Zionist propaganda puppet show.’

Another message from an unknown Labour councillor contained ‘echoes of the blood libel’, the JLM events are told.

The tweet showed an Israeli flag dripping with blood along with the words: ‘The genocidal murderers of innocent women and children: Moses must be proud of you.’ The message was headlined: ‘Israel is evil, long live Palestine.’

Former London mayor Ken Livingstone has been accused of anti-semitism in the past

A Scottish Labour member shared a Holocaust denial cartoon, showing a Jewish stereotype withdrawing cash from a Holocaust memorial.

A councillor shared a picture saying: ‘The modern state of Israel was created by the Rothschilds, not God – and what they are doing to the Palestinian people now is exactly what they intend for the whole world.’ Alongside a picture of a child in a hospital bed, it said: ‘Today it’s a Palestinian child: soon it will be your child.’

A Labour forum discussed the ‘master race’ and included a picture of nine large-nosed people alleged to be in control of Wall Street, ‘internet spying’, Hollywood and TV, the law courts, the cancer industry, pornography, ‘wars for Israel’, sex-trafficking and ‘fake opposition’.

One member wrote: ‘I see the corrupt “master race” side-stepped into this graphic,’ to which another replied: ‘Lol [laugh out loud] be careful you might get accused of being anti-semitic.’

This led to a discussion about ‘paid disinfo agents’ and Blairites ‘running to the MSM [mainstream media]’ with mention of the Zionism ‘problem’. ‘Just look at who owns what,’ one said.

And another Labour member simply tweeted: ‘Every f****** Jew that died in the Holocaust was a blessing. Imagine how bad the world would be now if 6 million more of them had survived?’ Accompanying notes to the slides make the point that Labour members often end up sharing comments from the far-Right because they agree with their comments on Israel.

Holocaust denial and revisionism now also being seen on the Left

‘Labour people often end up tweeting proper Nazis either by ignorance or because they fall for their posts on Israel/Palestine. Holocaust denial and revisionism now also being seen on the Left,’ it said.

The notes also said that ‘denial of anti-semitism is known as the Livingstone formulation’ in a reference to comments by former London mayor Ken Livingstone in which he said that anyone critical of Israel was accused of anti-semitism.

A JLM spokesman said: ‘The training programme is starting to have an impact across the country. The examples used are actual samples of anti-semitism, and are regularly updated.

‘They are anonymised in order not to prejudice ongoing disciplinary cases.’

The issue of anti-semitism overshadowed the Labour conference after activists at an anti-Zionist fringe event demanded the JLM be expelled.

One speaker even suggested that questioning whether the Holocaust happened was a legitimate form of free speech.

The JLM demanded the expulsion of one Labour member, Naomi Wimborne-Idrissi, who chaired the fringe event.

Jeremy Corbyn was forced to deny he was leading the new ‘nasty party’, and the Labour leader of Brighton council threatened to ban the party from holding its conference in the town unless it cracked down on racism amongst activists.