Labour's centre left politicians vow to stay and fight as they attacked praise of Militant, anti-Semitism and 'navel gazing'.
At a rally of Progress - the group set up to help Tony Blair win power within Labour - MPs, councillors and campaigners said they were not leaving the party or joining another despite often receiving abuse and being told to 'f*** off and join the Tories".
In a defiant speech the Chair of Progress Alison McGovern admitted: "Life in the Labour Party at the moment is far from easy and I know that sometimes the behaviour of those on the hard left who think they act on behalf of the leadership can cause us distress."
But the Wirral South MP said she would not leave Labour and would continue fighting for its goal of giving power to working people.
She added: "At times recently, we have seen the Labour movement at its worst. A party that cannot demonstrate it can deal with vile anti-Semitism can't govern and nor will it deserve to."
Ilford North MP Wes Streeting attacked shadow equalities minister Dawn Butler's decision to praise Liverpool's Militant-dominated council for setting an illegal budget in the 1980s.
Mr Streeting said Militant's record was "not something to celebrate on the platform of a Labour conference".
He said: "Back then, when the Labour Party was tearing itself apart with internal battles, families like mine were suffering under Tory government."
Plans for a breakaway party were "on the road to nowhere" and Labour remained the only means for achieving progressive goals, he said.
But he warned that the "introspection" and battles over internal party procedures seen at the Liverpool conference were "killing the promise and hope of our party and keeping this Tory Government in power".
Mr Streeting urged Labour moderates to "stand up for the proud centre-left tradition in our party" and "take on the toxic political culture that calls us Red Tories and shouts 'shame' at trade unionists on the conference floor" .
He said: "We stay and we stand up for what we believe in."
Walthamstow MP Stella Creasy launched a broadside against the "toxic" left-wing Momentum group and called on moderates in the party to "take back control of socialism".
Ms Creasy said: "If you think being political means sitting in meetings or shouting 'Red Tory' at people who think differently from you, you can do one.
"Socialism isn't a scout badge you get for going on a protest march and trolling some MPs on Twitter ."
Ms Creasy asked: "Two years on, what has Momentum actually achieved? To what single cause can they lay claim? They find time to try to deselect me, but not to take a stand against being in the same lobby as the likes of Jacob Rees-Mogg . Absolute boys? Absolute melts!"
Ms Creasy urged Labour moderates not to leave the party, telling them: "There is no cavalry coming, there is only us to stand up for what we believe in.
"I'm not asking you to stay put in Labour, I'm asking you to stand proud in Labour. Comrades, let's take back control of socialism."
Luciana Berger, who is the parliamentary chairwoman of the Jewish Labour Movement and has received a torrent of abuse in recent months, won loud and sustained applause from the Progress rally.
The Liverpool Wavertree MP looked tearful as she said the party was being held back by the "tsunami of anti-Semitic hate" seen in recent months.
"If we have to spend another six months like we have spent the last six months, patiently explaining to new Labour Party members - and some old ones - that Hitler didn't want to help the Jews, or that the Rothschilds don't run the world banking system, or that the Jews didn't finance the slave trade or that me and other Jewish MPs are not Mossad operatives, or that it's not cool to desecrate the mass grave of the Warsaw ghetto with 'woke' slogans, we will be no further forward," she said.