Just as in the U.S., criticism of Israel or Zionism, or supporting the Palestinians, is somehow an exception to free speech. From Caitlin Johnstone at caitlinjohnstone.com:

A Palestinian-Australian man has been criminally charged for voicing criticisms of Zionism during a protest against Israel’s genocide in Gaza. He could spend months in prison.
A Palestinian-Australian man has been criminally charged for voicing criticisms of Zionism during a protest against Israel’s genocide in Gaza. He could spend months in prison.
The Age reports that restaurant owner Hash Tayeh has been charged with four counts of “using insulting words in public” for repeatedly uttering the phrase “all Zionists are terrorists” at a pro-Palestine rally in Melbourne last year. According the The Age’s Chris Vedelago, the punishment for this crime of political speech is “up to two months in prison for a first offence and six months for three or more offences.”
“It is believed to be the first time that potential political speech has been deemed a criminal offence that breached the ‘insulting’ law,” Vedelago reports, adding, “The charges are normally levied for using abusive or obscene language against police officers.”
You really couldn’t ask for a better illustration of the authoritarian dystopia that Australia has become than a news report about a man getting criminally charged for normal political speech with a law that is normally used to jail people who speak impolitely to the police.