17/12/2016 10:20 AM AEDT | Updated 17/12/2016 1:19 PM AEDT

Protesters Roll En Masse Down Parliament House Lawns

A unique rally is underway in Canberra.

Hundreds have rolled down the Parliament House lawns in a lighthearted protest.

Hundreds of protesters have turned out at Parliament House for a mass roll down the iconic building's lawns before a controversial security fence is put up preventing access.

The mass roll kicked off at 10.30am local time and after being hastily organised by architect Lester Yao. He reportedly had the idea on Monday and by the close of the week had thousands of people on Facebook keen to attend the unique event.

Thank you Lester for this fun event 👍🏼😊 Sejal Chevli

Posted by Anjum Daga on Friday, December 16, 2016

The action is a response to plans for a security fence to be built at Parliament House that will prevent members of the public from accessing the lawns.

Ahead of the protest, Prime Minister Malcolm Turnbull defended the erection of the fence, telling The Huffington Post Australia it was about "getting that balance right" on security, which he described as "critically important".

"We obviously have to find the right balance between security and maintaining public access to our national parliament," Turnbull said.

Architects have been critical of the move, saying a fence will compromise the building's original design intent that was about free access to the lawns.

Even before today's event, Canberra locals have already been getting final rolls in.