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Mr Bakr, a Muslim of Iraqi and Italian background, said he thought Muslims were obligated help fellow Muslims overseas.
He also said that he believed that the Islamic State represented the purest interpretation of the Islamic holy book, the Koran.
The Department of Foreign Affairs and Trade has classified the Islamic State as a terrorist organisation.
Other Islamic youth representatives on the program completley disagreed with Mr Bakr.
We've got family in Iraq who have experienced all of this, you cannot say that, said guest Ninva Yakou.
For ISIS (Islamic state) to claim that they are just fighting for Islam is just a joke, they don't fight for anyone but themselves and their so called state, said guest Yehya El Kholed.
Mr Bakr felt that Muslims were being unfairly targeted by Australians.
In order for me to be connected to the values here of Australia, the Australian government needs to stop picking on the Muslims here, Mr Bakr said during the program.
Whenever you express your opinion of a tyrant, you are subjugated to being a terrorist or subjugated to being a national threat, he said.
Mr Bakr arrived at the program wearing the flag of the Islamic State, a group reportedly responsible for massacres and mass beheadings in Iraq.
Another Australian Islamic State supporter, Mohamed Zuhbi, appeared on Insight via a Skype link from Turkey.
Despite being born in Syria, Mr Zuhbi has lived in Australia since the age of one.
He said he was currently undertaking humanitarian work but had crossed the Syrian border a number of times.
I believe that [Islamic State] are the future of Syria, he said.
I believe that they're the future of the Islamic empire to come.
Another Australian Islamic State supporter, Abdul Salam Mahmoud, claimed he was also currently working in a humantarian capacity in Syria.
In Islam we're obligated. Wherever our people are being harmed or being oppressed it's an obligation for us to go and help them to fight tyranny and to fight oppression, Mr Mahmoud said.
He explained what humantiarian work he was doing with the Islamic State.
'We give monthly payments to families who have orphans and widows and we give them food packages, he said.
Australian National Imams Council spokesman, Sheikh Mohamadu Saleem, was concerned by the number of young Australian Muslims fighting with the Islamic State.
There is a very small number of people... who are not listening, he said.

But the large number of people who are in schools, in the universities, doing the right thing, they are listening.
Sheikh Mohamadu Saleem reaffirmed that it was not the duty of Australian Muslims to fight overseas.
Fairfax Media