The FBI has admitted to gathering secret intelligence about the annual Burning Man festival since 2010. In response to a request under the 2012 Freedom of Information Act, the security service said its Special Events Management unit has kept files on festival-goers, known as 'burners' - to 'aid in the prevention of terrorist activites and intelligence collection'. But the FBI's 16-page response to the question by Inkoo Kang is heavily redacted, with information about the technology being used to secretly gather the information being blanked out. The revelation comes as the 29th Burning Man takes place in the Black Rock...