Liberal Senator Cory Bernardi is facing an angry backlash and calls for his scalp after he promised to help controversial Dutch politician Geert Wilders organise his visit to Australia.

Mr Wilders, 48, has faced accusations of racial vilification for his hostile views on Islam.

He provoked outrage among the Netherland's Muslim community after branding Islam a violent religion, likening the Koran to Hitler's Mein Kampf and calling the Prophet Mohammed a pedophile.

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