Rallies were held in cities across Australia Saturday, with clashes reported between rival demonstrators amid tense standoffs with police officers.

Pro-Palestine groups, Indigenous rights activists and anti-government demonstrators took to the streets in Melbourne, Sydney, Brisbane, Adelaide and Darwin.

In Melbourne, local media reported tense confrontations between protesters and police as rival groups turned on each other. Pro-Palestine and Indigenous rights protesters confronted an anti-government group, calling them Nazis, The Age reported.

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In Sydney, hundreds of police officers were deployed across the city. One man was arrested for breaching the peace, according to the police.

The rallies follow a spate of far-right activity late last month, when members of the National Socialist Network appeared at several demonstrations, chanting slogans such as “Hail White Australia.” In Melbourne, a group attacked an Indigenous protest site — a move critics said highlighted the contradiction of anti-immigration groups targeting Australia’s First Peoples.