Samantha Ratnam, who stepped down as leader of the Victorian Greens for a tilt at the seat of Wills, is set to address protesters at a pro-Palestine rally at Melbourne's State Library on Sunday.
The member for the northern metropolitan region said people were sick of professional politicians who backed Israel's actions in Gaza.
The seat of Wills, previously held by former Labor prime minister Mr Hawke, is held by Peter Khalil.
"I am hearing from hundreds in our community of Wills about how betrayed and abandoned they feel by Labor in their time of greatest grief and need," Ms Ratnam told AAP.
Protesters will gather for pro-Palestine rallies in Melbourne and Sydney on Sunday. (Con Chronis/AAP PHOTOS)
"To see Labor and Liberal politicians pass motions 'standing with Israel' - while refusing to disclose ties and end partnerships with weapons manufacturers directly responsible for the artillery that is killing thousands of innocent civilians - has been gut-wrenching for our community.
"Labor MPs like Peter Khalil and Ged Kearney say they support Palestinians - but they didn't vote to recognise the state of Palestine when they had a chance."
Ms Ratnam said she would use her address at Sunday's rally to acknowledge the "grief, pain and betrayal" she said many in the community felt.
She called for the federal government to stop backing the invasion and call for a permanent ceasefire, recognise the state of Palestine, expel the Israeli ambassador, impose sanctions, and cancel two-way arms trade with Israel and any partnerships with weapons manufacturers.
"People have been gathering in their thousands in Melbourne and across Australia every Sunday since Israel began invading Gaza," Ms Ratnam said.
"This is becoming the largest movement for peace and they are working in peace to end the genocide of the Palestinian people."
A pro-Palestine rally will also be held at Hyde Park in Sydney on Sunday.
The rallies come after activists proclaimed Friday a "national day of action against Labor MPs", with police investigating acts of vandalism at some politicians' offices.
Hamas attacked Israel on October 7, killing 1200 people and taking more than 200 hostages, according to Tel Aviv.
Israel launched air strikes and a ground invasion of the Gaza Strip in response.
Its offensive has killed more than 36,000 Palestinians, injured more than 80,000 and displaced more than 1.7 million, Gaza's health ministry says.
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