Apocalypse: The Second World War. 3/6 Shock

Shock is, of course, what you would feel when you learn of all the Nazi atrocities during World War II. This episode chronicles Hitler's breaking of the Nazi-Soviet Non-Aggression Pact. Which of course resulted in the eventual German assault on Russia, the fall of Poland, and the beginnings of the Holocaust. This was before they discovered the most cost-efficient way to carry out the Final Solution.

*pic from natgeotv.com