As Germany commemorates the 80th anniversary of the liberation of Nazi concentration camps, FRANCE 24 looks at the slowly-ending hunt for Nazis in the country. After the Nuremberg trials it seemed as if the trail had gone cold on Nazi war criminals. And it was only in 2009 that the hunt for Nazis resumed with the trial of John Demjanjuk. Anne Mailliet, François Rihouay, Willy Mahler and Nick Holdworth report.