A disparate mix of chanting and placard-waving political protesters have brought their grievances to the doorstep of the triennial gathering of the Labor movement.
Delegates were confronted by an array of colour, movement and noise as they arrived at the Labor national conference in Adelaide on Friday, including a giant inflatable green submarine, faux radiation suits and a "choir" of voices raised in musical protest.
From Extinction Rebellion and Australian Friends of Palestine, to socialist group Solidarity and the International Campaign to Abolish Nuclear Weapons, the groups delivered messages including ending the AUKUS alliance, cutting military spending, sanctioning Israel for its treatment of Palestinians, and urging action on climate change.
Around 150 people gathered on a chilly Adelaide morning, in marked contrast to the first day of the conference, which attracted only a small handful of protesters.
Australian Friends of Palestine spokesperson Mike Khizam said it was no longer enough to "express concern" while Australia continued military co-operation and refused to impose consequences for Israel's crimes.
"We believe that Labor delegates face a defining choice this weekend," he said.
"They can allow their party to continue providing political cover for Israel's occupation, apartheid and genocide, or they can adopt policies that bring Australia's actions into line with international law."
The International Campaign to Abolish Nuclear Weapons co-chair Tara Gutman said that eight years ago, then Opposition Leader Anthony Albanese had promised to sign the Treaty for the Prohibition of Nuclear Weapons, joining more than 100 other countries.
"The underlying issue why they haven't signed is our US alliance and not wanting to upset the Americans," she said.
"It's just a question of whether or not they've got the guts to do this in the current environment, and we'd really like to see them rise to the occasion and do that."
Socialist group Solidarity's David Glaz said they opposed the increasing militarism reflected in the AUKUS agreement.
"That's not just nuclear submarines, but a collaboration across cyber warfare and missile warfare to drive to war against China," he said.
"It's incredibly dangerous that Australia is involved in this. We should be standing against war and not spending money that could go on the NDIS, health or education on weapons."
On Saturday, a coalition of more than a dozen community groups will rally outside the conference, representing anti-war, anti-nuclear, Palestine, poverty and housing, unionist, and environmental movements.