A rally was held outside Queensland parliament on Thursday over the arrest of two people for allegedly reciting controversial pro-Palestinian slogans hours after the new laws came into effect.
The Queensland government came under fire after outlawing slogans calling for Palestinian liberation as part of sweeping laws to target anti-Semitism.
It is the first state to expressly ban use of the phrase "from the river to the sea" - widely adopted by pro-Palestinian supporters - and the slogan "globalise the intifada".
The two activists - a man and woman - were arrested for using the phrase "from the river to the sea" at a rally outside parliament on Wednesday as they protested against the new laws.
Greens MP Michael Berkman was at the rally and witnessed the arrest of the man, identified as Liam Parry.
"It was a pretty extraordinary display from the QPS (police)," he told AAP.
"I think the arrest yesterday has all the hallmarks of an authoritarian police state, and the police there were clearly all too happy to act as the thought police on behalf of the LNP state government."
Parry, from the Students for Palestine group, claimed he was using the phrase in the context of education.
"The phrase the government is trying to ban is about asserting that the people who live between those bodies of water deserve dignity and freedom," he told the rally.
"So when we say 'from the river to the sea' we are calling for freedom and liberation for the people of Palestine."
Parry was arrested shortly afterwards, with protesters calling out "Solidarity" and "Free Palestine" as he was placed in a paddy wagon.
He is set to appear in Brisbane Magistrates Court on April 8 for the offence of recital, distribution, publication or display of prohibited expressions.
If found guilty, he faces a maximum of two years in prison.
A spokesperson for Queensland Attorney-General Deb Frecklington refused to comment as the case was before the courts.
A woman wearing a T-shirt bearing the banned phrase was also arrested at the end of Wednesday's march.
Students for Palestine spokesperson Ella Gutteridge said police "formed a huge wall surrounding her and carted her off".
"This shows the true nature of these laws, which are to intimidate and silence peaceful activists."
The 18-year-old woman was later released with a caution.
The full saying "from the river to the sea, Palestine will be free" is a reference to the land between the Jordan River, which borders eastern Israel, and the Mediterranean Sea to the west.
Hamas, designated a terror organisation in Australia, includes similar wording to the slogan in its constitution as part of its rejection of Israel.
But activists say those words and "globalise the intifada" are calls for Palestinian freedom and human rights, rather than violence or the destruction of Israel.
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