Tā neko sev security breach
The Queensland police who are in charge of the security of the G-20 venue said that they had discovered 2 projectors which were disguised as security cameras inside the venue. They said that the projectors were to be activated in the course of the summit by remote control to beam anti-G-20 slogans on the walls of the convention centre.
http://www.techworm.net/2014/11/g20-summit-security-breached.html