The rallies on Saturday were organized by the Welcome to Australia campaign and aimed at celebrating cultural diversity and promoting compassion and unity in the nation, local press outlets reported.
"The walk is a loud declaration that thousands of Australians believe we are a nation known for our compassion, generosity and welcome," said Chief Executive of Welcome to Austria Mohammad Al-Khafaji, a former refugee.
Al-Khafaji also insisted that the movement has gone global this year, saying, "A community in Anchorage, Alaska, heard about Australia's Walk Together celebration and they were really impressed with its symbolism and its power.
"Those Alaskans are holding their own Walk Together event this October to tie in with our walks in Australia this weekend," he added.
Meanwhile, Tasmanian Governor Kate Warner took part in the rally held in the city of Hobart, calling on Australians to challenge the Islamophobic views of One Nation senator, Pauline Hanson.
She further called on the demonstrators to stand firm in their support for refugees.
Warner underlined that Hansen had "declared that Australia was being swamped by Muslims and in which she reiterated a call for a ban on Muslim immigration."
"I think it's so important for Australians who oppose her views to stand up and be counted," she added.
According to local press reports, hundreds of people took part in the rally in the city of Adelaide marching from the Torrens Parade Grounds to Elder Park.
Participants at the Adelaide rally included state lawmaker Nat Cook, former Greens senator Penny Wright and representatives from the Australian Federal Police.
Well-known Australians who attended the nationwide rallies included political leaders from major parties in the country as well as Missy Higgins, Judith Lucy, and Tom Ballard.
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