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London Mayoral Candidate Ken Livingstone Launches His Election Manifesto

LONDON, ENGLAND - APRIL 11: Ken Livingstone (L), the Labour candidate for Mayor of London, rubs his eyes as his mayoral promotional video is shown at Ravensbourne College on April 11, 2012 in London, England. Mr Livingstone was joined by Ed Miliband, the leader of the Labour party, at the launch of his manifesto of pledges ahead of the election for Mayor of London on May 3, 2012. (Photo by Oli Scarff/Getty Images)

The week in pictures 13/4/12

13 April 2012

A Titanic tattoo, a hot air balloon crash and an encounter between two polar bears make our weekly photo retrospective.

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