(CNN) A 9-year-old Australian girl who refused to stand during the country's national anthem out of respect for the nation's Indigenous population has been attacked by prominent politicians, who called for her to be kicked out of school.

Harper Nielsen, who lives in the state of Queensland, told CNN affiliate Nine News she sat during her country's national anthem because she believed it was disrespectful to Indigenous Australians.

The anthem, titled "Advance Australia Fair," contains the line "Australians all let us rejoice, for we are young and free."

"(But) when it says Advance Australia Fair, it means advance the white people," the 9-year-old student told Nine News.

"And when it says 'we are young' it completely disregards the indigenous Australians who were here before us for 50,000 years."