A woman accused of carrying the Hezbollah flag at a pro- Palestine rally will be the first person to challenge the validity of federal anti-terror laws.

Sarah Mouhanna has pleaded not guilty to causing a public display of a prohibited terrorist organisation symbol following a protest in the Sydney city centre on September 29, 2024.

The 20-year-old is the first person to contest national laws introduced in 2023 to stop the display of prohibited terrorist organisation symbols in public places, a court heard.

Magistrate Christine Haskett said the constitutional challenge meant she could not deal with the matter, which should instead be elevated to the nation's highest court.

"I'm just concerned you've put the cart before the horse," she said.

"The High Court is the ultimate a

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