Labour today demanded MP Chris Williamson apologise for his “deeply offensive” claims about Labour anti-Semitism.
It came as Deputy Labour leader Tom Watson demanded the MP has the whip removed for bringing Labour into disrepute.
Mr Watson was understood to be making the demand in a letter to chief whip Nick Brown today.
The chief whip and general secretary Jennie Formby are in talks about what action to take against the loyal Jeremy Corbyn ally after a shock video leaked last night.
In the clip, leaked to the Yorkshire Post, Mr Williamson said: “We have backed off far too much, we have given too much ground, we have been too apologetic.”
He was addressing a meeting of the left-wing group Momentum – which burst into applause after his colleagues.
A Labour Party spokesperson said: “These comments are deeply offensive and inappropriate and fall below the standards we expect of MPs.
“Downplaying the problem of antisemitism makes it harder for us to tackle it.
“Chris Williamson should apologise immediately and withdraw his remarks.”
Mr Williamson, who himself has faced allegations of anti-Semitism, said in the clip: “The party that has done more to stand up to racism is now being demonised as a racist, bigoted party.
“I have got to say I think our party’s response has been partly responsible for that because in my opinion… we have backed off far too much, we have given too much ground, we have been too apologetic.
In the clip he can also be heard to say: “We’ve done more to address the scourge of anti-Semitism than any political party.”
And he said he had celebrated the resignations of Labour MPs last week by singing the 1980s hit by Kool and the Gang – ‘Celebration’.
It came hours after the Derby North MP received a formal warning for booking a room in parliament for a screening of the film Witch Hunt about Jackie Walker’s suspension from the party over allegations of anti- Semitism.