Parliament has united in fury and determination to condemn unrepentant Queensland senator Fraser Anning for his speech praising the White Australia policy and attacking Muslim immigration.
But despite the strong criticism from across politics, the Katter's Australian Party MP has the "1000 per cent" support of his leader.
Senator Anning is also refusing to apologise for calling for a "final solution" on immigration, a comment that has angered Jewish groups and MPs.
Prime Minister Malcolm Turnbull and Labor leader Bill Shorten gave passionate speeches in parliament opposing Senator Anning on Wednesday before sharing a handshake across the despatch box.
"Those who try to demonise Muslims because of the crimes of a tiny minority are only helping the terrorists," Mr Turnbull told parliament.
The ex-One Nation senator made his first speech in the upper house on Tuesday, drawing support from his party boss despite the controversy.
"Absolutely, 1000 per cent I support everything he said ... it was a magnificent speech,"" Bob Katter told reporters in Cairns.
But Pauline Hanson said her former MP's speech was straight from Nazi propaganda chief Joseph Goebbels' handbook.
"I am appalled by Fraser Anning's speech. We are a multiracial society and I've always advocated you do not have to be white to be Australian," Senator Hanson told parliament, having flagged a national plebiscite on "too high" migration levels.
Senior minister Josh Frydenberg, whose parents were Jewish immigrants and whose Hungarian mother escaped the Holocaust, said he was disgusted by the speech and the "final solution" comment.
Mr Frydenberg shared a hug in parliament with Labor MP Ed Husic, who shared his experiences of growing up in a Bosnian Muslim migrant family.
But Senator Anning says his speech has been misinterpreted and is unapologetic about using a phrase coined by Nazi leaders in World War II to describe their plan to murder Jewish people on an industrial scale.
"If people want to take it out of context that's entirely up to them," he told the Nine Network.
"It was never meant to denigrate the Jewish community and it's two words and if that offends anyone, unfortunately, that's the way it has to be."
Mr Katter said he genuinely believed Mr Anning had no idea of the historical context of the term.
"He had absolutely no idea," he said.
Senator Anning also linked Muslim communities to terrorism and said Australia's immigration should discriminate in favour of Europeans.
In response, Mr Shorten moved a unanimously-passed motion in parliament praising the Holt government for beginning the dismantling of the white Australia policy in 1966.
Senator Derryn Hinch said he felt like he was at a "Ku Klux Klan rally" during Senator Anning's speech, while Labor MP Peter Khalil, the son of Egyptian migrants, accused the senator of trying to whip up hatred and fear.
Around 1942, the Nazi leadership established a plan called The Final Solution to the Jewish Question, which led to the genocide of more than six million Jews in occupied Europe.
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