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Activists from Anonymous could risk arrest if they go ahead with plans to wear masks into Brisbane's G20 security zones.
A call has gone out on Facebook for the group's supporters to "mask up" and march on the Brisbane Convention and Exhibition Centre this Saturday, in defiance of an official ban on facial coverings.
Police last night released a statement: "Under the G20 (Safety and Security) Act 2013 masks are a prohibited item within the security area, without a lawful excuse.