This is probably not what GoPro intended by the “World’s Most Versatile Camera”: When the police tried to break down his door, [Mohamed] Merah, who had an Uzi, Kalashnikov and other weapons, fired. Then he decided he wanted to talk. From 7am until late on Wednesday night, he had several walkie-talkie conversations with a police negotiator. He also gave them a location for a bag containing a blood-spattered GoPro camera device which he had worn round his neck to film his attacks.