In a Facebook video from a Sydney anti-immigration rally on Sunday, as a man dressed like a medieval knight watches on, One Nation’s lead upper house candidate, Stuart Bonds, launches into a speech against “mass” migration.

“Make no mistake, we are being demographically replaced inside our own nation,” he says.

“If we don’t support Australian mothers having Australian children, we [are] going to pay for other cultures’ children to be brought up in our lands.”

In an apparent allusion to the “great replacement theory” , a far-right conspiracy theory that white westerners are being actively “replaced” by minority ethnic immigrants, he continued: “That’s the socialist plan, is to destroy and bring down and tear down the fabric of your civilisation.”

The comments sparked a wave of criticism, but the party has shown no signs of taking Bonds off the ticket for the 2027 New South Wales state election.…