"As the families of the victims of the Christmas Island disaster buried their dead last month, we listened in disbelief as shadow minister for immigration and citizenship Scott Morrison took politics to a new low by whining over the cost of flying mourners to Sydney, including the orphan boy who probably watched his parents drown," Mr Wilkie said.
He accused Senator Bernardi of "rants whipping up the fear of Islam" and quoted him as saying, "I, for one, don't want to eat meat butchered in the name of an ideology that is mired in sixth-century brutality and is an anathema to my own values".
Mr Wilkie compared the Senator's remarks to former One Nation leader Pauline Hanson's maiden speech, in which she claimed Australia was in danger of being swamped by Asians.
"I say to Mr Morrison and Senator Bernardi, you are a disgrace - a disgrace to the high office you hold and the people you represent," Mr Wilkie said.
Senator Bernardi told ABC News Online that Mr Wilkie was a hypocrite.
"Why did he remain silent when Nick Xenophon, Bob Brown and Kevin Rudd expressed doubts about religion?" he said. "Nick Xenophon criticised Scientology, Bob Brown wanted a register of businesses run by the Exclusive Bretheren, and Kevin Rudd said he had concerns about some religious practices.
"How can you be called a racist for questioning a religious practice? My comments were all in regard to religious practice, not in regard to race or ethnicity.
"I've been a defender of people's rights to practice religion."
Mr Wilkie, however, called for the dismissal of Mr Morrison and Senator Bernardi. "And I say to Mr Abbott, you must lance this boil once and for all," he said.
"It is not good enough to dismiss the hate inhabiting the dark corners of the Liberal Party and the widespread concern it engenders by just noting your most senior operators go a little too far.
"Some politicians are as much to blame as the thugs themselves for episodes like the Cronulla riots and the hate crimes which continue on our streets."
But Senator Bernardi said "criticism only hurts when you have high regard for the people who criticise you".
ABC News Online was unable to contact Mr Morrison.
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