On Duty: The Polish Blue & Criminal Police in the Holocaust

Shortly after the occupation of Poland in the fall of 1939, the Germans created the Blue Police, consisting mainly of prewar Polish police officers. Within a short time, this police force was responsible for enforcing many anti-Jewish regulations issued by the Nazis. Who were these policemen, and how did they transform from ordinary policemen to murderous executioners? And what was the role of the Germans in this horrifying picture?