Faiza Shaheen has claimed her 'pro-Palestine' views saw her ousted as a Labour general election candidate as the row over Sir Keir Starmer's 'purge' deepened.
The academic, known as the 'Chingford Corbynite', had been preparing to take on Tory MP Sir Iain Duncan Smith in his Chingford and Woodford Green seat on 4 July.
Ms Shaheen had been Labour's candidate in the north east London constituency at the 2019 general election, when she came within 1,300 votes of Sir Iain.
But she was dramatically blocked by Labour officials from running for the party again in the seat in five weeks' time.
She has threatened the party with legal action following her exclusion by Labour's ruling National Executive Committee (NEC).
In a social media post last night, she attacked Labour's decision to endorse Shama Tatler - who has now been chosen as the party's candidate in Chingford and Woodford Green.
Ms Shaheen wrote: 'Really?! Wow a Brent councillor with no history here at all.
'They would rather lose than have a left pro Palestine candidate. This is offensive to my community.'
In another post this morning, Ms Shaheen also revealed some of the social media activity she claimed was used to justify the NEC's decision.
'People are asking so here are some of the tweets that were used against me and that I had to answer for in my NEC panel meeting earlier this week,' she wrote.
'They've briefed a different story about what happened, but they wanted me out and used very thin grounds to do it.'
Allies of Ms Shaheen are planning a rally in support of her outside a Tesco near Highams Park Tube station tonight.
Faiza Shaheen has claimed her 'pro-Palestine' views saw her ousted as a Labour general election candidate as the row over Sir Keir Starmer 's 'purge' deepened
Ms Shaheen has threatened the party with legal action following her exclusion by Labour's ruling National Executive Committee (NEC)
The academic, known as the 'Chingford Corbynite', had been preparing to take on Tory MP Sir Iain Duncan Smith in his Chingford and Woodford Green seat on 4 July
In a social media post last night, Ms Shaheen attacked Labour's decision to endorse Shama Tatler - who has now been chosen as the party's candidate in Chingford and Woodford Green
Ms Shaheen shared screenshots of her past posts on X, formerly known as Twitter.
These included her criticism of Labour's 2021 decision to readmit Trevor Phillips, now a Sky News presenter, back into the party, and her 'liking' of messages sent by the Green Party and Green Party candidates.
She explained that she 'liked' a post by Green Party council candidate Griffin Carpenter as 'an old colleague of mine', adding: 'This was 2014 before I even joined the Labour Party.'
'Majid is a friend,' she added in relation to her 'liking' of a post by former Green Party MEP Magid Magid.
Ms Shaheen has previously claimed she was given five-and-a-half hours' notice of an NEC panel meeting on Tuesday to discuss her social media activity.
It was reported by BBC Newsnight that Ms Shaheen was also confronted over allegedly 'liking' a series of posts that played down anti-Semitism accusations.
According to the programme, one post said: 'Every time you say something even mildly critical of Israel, you're immediately assailed by scores of hysterical people who explain to you why you're completely wrong, how you're biased against Israel.
'Moreover, you can't easily ignore them because those are not just random people.
'They tend to be friends or people who move in the same circles as you. Those people are mobilised by professional organisations.'
Ms Shaheen told Newsnight she does not remember liking the post in question.
'I know what's wrong with it, of course, the line that's there about 'they're in professional organisations', it plays into a trope and I absolutely don't agree with that and I'm sorry about that,' she said.
'And I expressed that I was sorry in that meeting yesterday over my crying baby but that's one tweet.
'I've organised an interfaith vigil with a local Rabbi after the attacks, Hamas's attack.'
Allies of Ms Shaheen are planning a rally in support of her outside a Tesco near Highams Park Tube station tonight
Ms Shaheen's exclusion as a general election candidate comes amid a huge row over Labour's treatment of veteran MP Diane Abbott.
The former shadow home secretary has had the Labour whip restored following a long investigation into her comments about Jewish people.
But there is still confusion about whether she will be allowed to stand as an election candidate for the party.
Ms Abbott has held the Hackney North and Stoke Newington constituency for Labour since 1987.
Lloyd Russell-Moyle, who was MP for Brighton Kemptown until Parliament was dissolved this week for the general election, was this week blocked from standing as a Labour candidate over an allegation about his behaviour.
Critics have accused Sir Keir of overseeing a 'purge' of Labour's left-wing candidates before the 4 July vote.
Former party leader Jeremy Corbyn last night told Sky News: 'The one thing they all have in common, the people that have been purged, is that they're on the left of the party and have all spoken out in favour of an immediate ceasefire and permanent ceasefire in Gaza.'
Sir Keir yesterday denied he was blocking left-wing candidates from standing for Labour on 4 July.
Asked if that was the case, the Labour leader replied: 'No. I've said repeatedly over the last two years, as we've selected our candidates, that I want the highest quality candidates. That's been the position for a very long time.'