
German police officers put up barriers in Hamburg-Bramfeld, Germany, 03 June 2011. According to police reports, some 1,600 facebook users turned up at a 16th birthday party after a girl accidentally posted invitations on Facebook and neglected to mark them as 'private'. The Friday night party began peacefully but the partygoers became increasingly inebriated in the street outside the family home and a conflict with the police erupted. EPA/ANGELIKA WARMUTH

Some 1,600 facebook users turned up at a 16th birthday party in northern Germany, Hamburg-Bramfeld, Germany, 03 June 2011. After a girl accidentally posted invitations on Facebook and neglected to mark them as 'private', according to police reports. The Friday night party began peacefully but the partygoers became increasingly inebriated in the street outside the family home and a conflict with the police erupted. EPA/ANGELIKA WARMUTH

Some 1,600 facebook users turned up at a 16th birthday party in northern Germany, Hamburg-Bramfeld, Germany, 03 June 2011. After a girl accidentally posted invitations on Facebook and neglected to mark them as 'private', according to police reports. The Friday night party began peacefully but the partygoers became increasingly inebriated in the street outside the family home and a conflict with the police erupted. EPA/ANGELIKA WARMUTH

Facebook users occupy a house in Hamburg-Bramfeld, Germany, 03 June 2011. According to police reports, some 1,600 facebook users turned up at a 16th birthday party after a girl accidentally posted invitations on Facebook and neglected to mark them as 'private'. The Friday night party began peacefully but the partygoers became increasingly inebriated in the street outside the family home and a conflict with the police erupted. EPA/ANGELIKA WARMUTH