Earlier this summer, six photographers from the London Street Photography Festival were followed by videographers as they shot various urban locations. All six stood on public ground. All six drew the attention of private security guards, who asked them to stop or to justify what they were doing. In three cases, the police were called, despite the fact that the photographers were invariably polite and that no laws were being broken. One guard insisted that people going into his building could not be photographed because it posed a danger—to the top secret goings on inside?