The infuriated protesters, led by long-time campaigner Peter Tatchell, interrupted Mr Corbyn in anger at Labour’s response to Syria.
Amid the chaotic live broadcast, Mr Corbyn quickly lost control of his own audience and was forced off the stage by protesters who claimed he was ignoring war crimes.
The Labour leader was previously well known for his own left-wing campaigns before rising to power – but this time his former protesting friends turned on him.
Mr Tatchell stood at the front of the audience at the Methodist Central Hall in London
Mr Tatchell stood at the front of the audience at the Methodist Central Hall in London and told the Labour leader “to stand up and take action”.
Mr Corbyn was on stage with Baroness Chakrabarti, shadow foreign secretary Emily Thornberry and shadow home secretary Diane Abbott when the demonstration unfolded.
At first, Mr Corbyn refused to budge and begged them to “please leave” – before he changed his tune and actually thanked them for torpedoing his speech.
He said: “This is an event, Peter, can we have some questions, please?
“You and I trod the streets of Bermondsey together in the cause of human rights, we still walk the same path together”.
Mr Corbyn was forced off the stage by protesters who claimed he was ignoring war crimes
The anti-war campaigners demanded action on Syria
You and I trod the streets of Bermondsey together in the cause of human rights, we still walk the same path together
Mr Corbyn was also heard asking shadow foreign secretary Emily Thornberry when his party “condemned the bombing” of Aleppo.
As the heckling wore on, Mr Corbyn eventually caved and briefly left the stage.
When he returned, he said: “Thank you for raising the issue.
“Just to be absolutely clear, our shadow foreign secretary Emily Thornberry has made it absolutely clear that we do think there should be aid, we do think there should be a ceasefire, we do think bombing should stop.
“But still, I thank you for coming here today and raising it .”
At first, Mr Corbyn refused to budge
One user tweeted, in reference to the aim of the speech: “I believe with Tatchell’s disruption before Corbyn’s speech shows us anything other than the Left are Working Together for Real Change.”
The embattled Labour leader was also criticised for coming across “weak and dilute”.
Another person added: “The complete failure of Corbyn to handle the minor interruption of Tatchell’s idiots ravings proved how useless he’d be as a PM.”
The protest at the speech likened the besieged Syrian city of Aleppo to the infamous bombing of Guernica during the Spanish Civil War, in which civilians were deliberately targeted from the air by warplanes.
Mr Tatchell later said: “I’m a great supporter of Jeremy Corbyn but I think on some international issues he’s fallen into the same trap as other Stop the War leading lights.
“Jeremy does not support the autocracies in Moscow or Tehran but he hasn’t been sufficiently loud in speaking out against them.
“We haven’t heard the leader of the Labour party speak out enough to demand UK air drops to besieged civilians who are dying in their thousands.
“Those are things that Jeremy Corbyn could push for in Parliament right now this week. He hasn’t done so so far. We hope as a result of today, he will.”