In 1945, Allied forces found evidence of atrocities. This is the historical record. (fonte: Wikipedia)

Nel 1985 , la televisione Inglese , una volta riscoperto il filmato della Liberazione di Bergen Belsen realizzato nel 1945 nel monento in cui gli Inglesi raggiunsero il campo , riassemblò quelle immagini per un documentario che le alternasse a testimonianze di superstiti e di coloro che dettero un contributo nel realizzare e conservare quelle immagini , tra i quali vi fu anche il regista Alfred Hitchcock .

This film footage was shot in the death camps in 1945 at the end of WW II. Nazi Germany had over 400 camps (Recent research will probably show more camps unknown at that time.) It is hard to watch the "unspeakable horrors " that were found in camps like Bergen-Belsen, Ravensbruck, Dachau, Buchenwald, Auschwitz and several other large camps. Many of these camps were close to large cities and most used the prisoners as free labor for the Third Reich war machine to do hard work without food, minimal housing and unsanitary conditions.
This film was originally directed by Alfred Hitchcock and stayed in the Imperial War Museum for 60 years before being rediscovered and broadcast to the world. PBS Frontline has made it available again. It is hard to watch but necessary for us to see and understand why we must be sure that it never happens again.