'We need to show each other respect': Malcolm Turnbull
Prime Minister Malcolm Turnbull says violent extremism is a law and order issue of the highest priority and has called for Australians to respect one another.
"This phenomenon of violent extremism is a challenge to the most fundamental Australian values," he told reporters on Friday.
The words came a week after the shooting of NSW Police employee Curtis Cheng by 15-year-old Farhad Khalil Mohammad Jabar outside the Parramatta Police HQ.
The PM spoke ahead of an anti-mosque rally in Parramatta on Friday night and called for calm.
Mr Turnbull said: "He (Mr Cheng) was murdered in an act of terrorism by a 15-year-old boy, motivated we believe by extremists' political and religious views,"
"It is not compulsory to live in Australia, if you find Australian values are, you know, unpalatable, then there's a big wide world out there and people have got freedom of movement," he added.
"Those who seek to gnaw away at that social fabric are not part of the Australian dream, they are not advancing the interests of our great country.
"Australia, my friends, has the greatest future ahead of it."
Mr Turnbull explained that respect was a two-way street.
"Every religion, every faith, every moral doctrine understands the golden rule: do unto others as you would have them do unto you," he said.
"Mutual respect is fundamental to our harmony as a multicultural society and it is fundamental to our success."
Mr Turnbull said extremism destroyed the virtues of faith and religion in our community.
The speech came hours after The Grand Mufti of Australia has some harsh words for anyone praising the deadly shooting of an employee outside New South Wales police headquarters last Friday.
Dr Ibrahim Abu Mohamed came together with Australian National Imams Councils representatives in Bankstown to reject "deviant so-called religious teachings" in the wake of the killing of accountant Mr Cheng.
Parramatta Mosque chairman Neil El-Kadomi has a short and simple message for Muslims who don't respect Australian values. Photo: ABC
Dr Mohamed said violent religious extremism was a rare but serious issue threatening the entire Australian community.
The community leaders stopped short of describing Jabar's actions as an act of terrorism, although Dr Mohamed told those who supported the shooting to "stop messing with Australia and its society".
"Sadly, a very, very small number of Australians of Muslim faith have chosen this path," he told reporters.
"These misguided teachings are imported and not made in Australia," he said. "It comes from Sheikh Google, Sheikh Twitter and Sheikh Facebook."
"We refuse and reject any form of terrorist activities, whether this - if it's proven to be a terrorist act - or any other," he added.
He called for "proper communication between the families and the community and us" as well as security agencies and police.
"We believe that dialogue is the prerequisite of understanding. Australia deserves this for us to remain in a cohesive society," he added.
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Murdered NSW Police employee Curtis Cheng pictured with his family. Photo: NSW Police
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The Grand Mufti's firm warning comes after Parramatta Mosque chairman Neil El-Kadomi said members of the Islamic community who threaten to turn violent will be expelled from the Parramatta community.
"If you don't like Australia, leave it," Mr El-Kadomi told Fairfax Media.
"We will not tolerate anyone who wants to get us into trouble."
Federal Opposition Leader Bill Shorten said Mr Cheng's death was the tragic consequence of "people using young people, twisting their heads".
Authorities are trying to discover how Jabar got the gun he used to murder Mr Cheng and how he was prompted to commit the killing.
Three of four males arrested in Wednesday's dawn counter-terrorism raids across western Sydney have since been released.
An 18-year-old man, who cannot be named, remains in custody without charge after investigators applied for a court order extending his stay behind bars.
