Tensions have reignited between rival groups of protesters during an anti-immigration rally headlined by One Nation leader Pauline Hanson in Melbourne's CBD.
Hundreds of protesters waving Australian and boxing kangaroo flags braved the rain to march from Flinders Street to Flagstaff Gardens for Sunday's Put Australia First rally.
The demonstration, organised by Monica Smit of Reignite Democracy Australia, was met by hundreds of anti-racist counter-protesters attempting to disrupt the event, which sparked heated confrontations.
A heckler used a megaphone sounding sirens to drown out Hanson's speech, repeatedly shouting 'racists' and 'Go home Pauline' before he was removed by police.
Riot squad officers were forced to form a barrier to separate the opposing groups after scuffles broke out.
Counter protesters were shoved aside by Ms Hanson's supporters, with several men filmed getting into a fist fight before police intervened.
Despite the chaotic scenes, Hanson continued her address from a truck converted into a stage with a plea to protesters to not fight before making a blunt admission.
'I'm not from Victoria and, to tell you the truth, I wouldn't move to Victoria,' she said.
Hanson later interacted with supporters separated by a fence barrier and was escorted by police to her vehicle amid fears of another confrontation.
Police arrested one man in Swanson Street after he was allegedly found in possession of knuckle dusters.
Two move on directions were also issued at the rally.
Police will review CCTV and investigate the display of a Nazi symbol after an unknown man who threw a drink can at police.
There were no reports of any injuries.
Hanson vowed to fight on for supporters in Victoria, despite declaring that she would never move there.
'We will fight for you to give you representation in Parliament,' she said.
Hanson also took aim at Victoria's political leadership.
'You can see what the Labor Party has done to this state and I don't think the Liberals will be any better.'
Her speech focused on immigration, blaming high intake for Australia's housing and cost-of-living crisis.
'The biggest issue facing our nation right now is immigration. We've had one and a half million people enter the country, and that's why housing costs have gone up, that's why our health services are under pressure, and that's why Australians are struggling to find jobs,' she said.
'All of these problems stem from high immigration.'
Hanson further accused the government of using migration as a fiscal crutch, labelling it a 'Ponzi scheme'.
'The government keeps increasing immigration because they're wasting taxpayers' money and need more people paying taxes to prop up the system. This is nothing but a Ponzi scheme, and it's going to cause even bigger problems down the track.'
Pauline Hanson (pictured) met with supporters following her speech through a fence
She also vowed to push for drastic cuts to migration.
'We must reduce immigration until we clean up our own backyard. If I sit back and do nothing while Australians are living in tents, under bridges, in parks, couch surfing, or families sleeping in cars, then I’m not doing my job as a member of Parliament.
'That is not the Australia I want.'
The rally also featured a pre-recorded message from far-right British activist Tommy Robinson, who is banned from entering Australia.
Hanson, 71, declared that she was 'here for the long haul - at least another 12 to 18 years.'
Her appearance comes as One Nation enjoys a surge in national support, with recent polling showing the party's vote share at an all-time high of 18 per cent, largely at the expense of the Liberal Party.
Hanson's hard-line stance on immigration and cost-of-living issues has resonated with voters frustrated by the major parties' policies.