The Holocaust is one of the most documented, witnessed and written about events in history, so why is Holocaust denial back on the political agenda? What has happened in the 75 years since the liberation of the camps to have so skewed the picture? And, if it matters, why does it matter?

Cast:David Baddiel, Deborah Lipstadt,

Genre:Documentary, TV Movie,

country:United Kingdom,

Production:Wall to Wall, BBC,