Parliament Grounds remain closed, following this week's dramatic end to the three-week occupation. 

A number of reviews are now set to be carried out, including a review of Parliament's security arrangements and response. 

Former Speaker David Carter is highly critical of how his successor Trevor Mallard handled the protest. 

He told Mike Hosking the protesters had to apply for permission to hold the protest, so the Speaker's Office had forewarning it was going to take place. 

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