Rallies and counter-rallies have been held around the country, with one man arrested as opposing groups of protesters confronted each other over issues of extremism and tolerance.
The Reclaim Australia group said its rallies on Saturday were a public response to Islamic extremism and a protest against minority groups who want to change the Australian cultural identity.
The group held 16 rallies in capital cities, regional and rural centres, speaking out against sharia law, halal certification and Islamic extremism.
Counter-rallies organised by opposing groups were protesting against Reclaim Australia, which they say is anti-Muslim.
A man at the Reclaim Australia rally in Hobart was arrested and charged with assault after his group clashed with the counter-rally supporting multiculturalism.
Clare Fester, who organised the counter-rally in Sydney, said Reclaim Australia was racist and divisive.
"It's quite clearly an attack on Muslims and Muslim communities in this country," she said.
"It's all about halal food, sharia law, banning the burka.
"[It's] something I think that's been encouraged by mainstream politicians as well, with Abbott attacking Muslim leaders and telling them they need to stamp out extremism that really doesn't exist, certainly not in Australia."
Reclaim Australia's John Oliver said it was wrong to label the group racist.
more here: Reclaim Australia clashes with opposing groups at rallies around the country over extremism and tolerance - ABC News (Australian Broadcasting Corporation)