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Jeremy Corbyn has vowed to stamp out online abuse in Labour's leadership battle - while sharing a stage with a man who said 'Blairites' should "shut the f**k up".

Launching his digital manifesto in London's trendy Shoreditch this morning, Mr Corbyn condemned the torrents of abuse surrounding the Labour leadership campaign as "appalling."

But as he slammed the behaviour, he was standing next to self-described "cybernetic communist" tech guru Richard Barbrook.

In May, Mr Barbrook hit out at Labour MPs who criticised Mr Corbyn's performance in the run up to the EU referendum .

He tweeted a link to a petition set up in the wake of MPs' no confidence vote in Mr Corbyn, saying: "Tell the Blairites that they ran a crap Remain campaign and should shut the f**k up."

A few days later he suggested a PR company, Portland Communications, was behind a wave of 64 frontbench Labour resignations in what the firm has branded a "ridiculous conspiracy theory".

Warning: Strong language in tweet below

During the launch, Mr Barbrook said there needed to be a balance in online discussions between "trolling and free speech".

He accepted the manifesto did not provide a solution to the problem, but said his plan to create a "People's Charter of Digital Liberties" was the right way to discuss the issue.

Labour MP Wes Streeting told PoliticsHome: “Presumably Mr Barbrook's colourful language is another example of the 'kinder, gentler' politics we've come to know and love under our dear leader.”

Mr Corbyn said: "I have set out a code of conduct on this and it does have to be dealt with.

"Everyone should realise that when they put something on Facebook or on Twitter or online in an email, it's exactly the same as if you'd put it in the print media in any other way. It's open to exactly the same protective laws of libel or slander.

(Image: PA)

"Many people use instant access to twitter as more or less a continual pub conversation, and deeply regret the abuse they send to people at that time is there for eternity in some way or other on the internet."

Mr Corbyn's code of conduct, published on his campaign website, reads: "There should be no personal hostility and nobody should feel intimidated at any time.

"So no foul or abusive language will be tolerated and all candidates should be listened to with courtesy and respect at hustings, meetings and events."

Last month, 44 female Labour MPs wrote to Mr Corbyn, demanding he to do more to stop the escalating abuse they have seen both online and in the real world.

The strongly worded letter said Mr Corbyn's response to his female MPs being subjected to rape threats and death threats online.

It ended by saying of the bullying: "Jeremy, this is being done in your name."

(Image: PA)

"I absolutely will not allow any sort of it whatsoever around our campaign," Mr Corbyn added today. "We do chase it down and we do stop it. And we will continue to do that because it is simply wrong."

The digital manifesto was launched at Newspeak House, in East London, this morning.

The event was streamed on Facebook Live, but viewers complained that the feed cut out halfway through the presentation.

Mirror Online contacted the Corbyn campaign for comment, but they had not responded at the time of publication.