Pauline Hanson is being accused of contributing to the Christchurch mosque terror attacks with her anti-Muslim rhetoric.
On Monday, Seven's Sunrise host David Koch and cross-bench senator Derryn Hinch took on the One Nation leader over her right-wing views, leading to a fiery on-air clash.
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"This terrorist manifesto almost reads like One Nation immigration and Muslim policy. Do you feel complicit with this atrocity?" Koch asked Hanson.
"The anti-Muslim rhetoric that you espouse constantly here, that you did in your maiden speech when you came to parliament. Do you understand?"
But Hanson fired back with references to Muslim attacks in Australia.
"I feel for these people," she said. "I feel for the families that have lost lives... We have problems but you've actually got to discuss it and debate the issues. Why do we have terrorist attacks in this country? Why is it happening around the world?"
Koch retorted that "most of the terrorist attacks are (carried out by) right-wing white supremacists that are egged on by your comments, by your anti-Muslim comments".
"[Things like] 'they don't deserve to be here', 'they will take over our country'. Can you understand how that empowers a white supremacist... into seeing it as a call to arms?"
Hanson defended her remarks, arguing that the UK public feels they have "lost their country".
"People are leaving England to come out here because they have lost their country. England is not the country that they grew up in," she said.
"Learn from the mistakes of other countries to ensure that it doesn't happen here.
'"I didn't grow up with terrorism when I was a child. Why is it happening now?"
Koch responded: "Really, Pauline? That is just tripe."
The clash then turned to her former One Nation party colleague Fraser Anning, now an elected senator, who has blamed the Christchurch attacks on Muslims immigrating to New Zealand.
She was asked if she had picked Senator Anning to run for One Nation because of his white supremacist views.
But Hanson said she didn't know what he believed at the time.
"For you to say that is absolutely disgusting," she claimed. "No, I didn't pick him because of that."
She was later called a "coward" after saying she would abstain from a vote to censure Anning over his offensive comments.
"A censure isn't going to prove, it's not going to do anything... what is a censure? It will not prove a damn thing," she said.
"The people will have their say, not politicians out there beating their chest about all of this."