Members of the public observe a two-minute silence in memory of the victims of the London bombings in London's Trafalgar Square. Members of the public observe a two-minute silence in memory of the victims of the London bombings in London's Trafalgar Square, July 14, 2005. The British capital led the tributes on Thursday as people across Europe joined a two-minute silence to mark the July 7 London bombings that claimed at least 52 victims. REUTERS/Dylan Martinez