Julian Assange supporters are urging Anthony Albanese to grasp a crucial opportunity to secure his release in a "litmus test" for democracy.
A public artwork of Assange and whistleblowers Edward Snowden and Chelsea Manning was unveiled in Sydney on Friday.
Speaking at the event, former journalist Dean Yates pleaded with the prime minister to lobby on behalf of the detained Australian during an upcoming meeting with Joe Biden and Britain's Rishi Sunak.