Daniel Goldhagen re-visits a question which history has treated as settled, and his research leads him to the inescapble conclusion that none of the answers holds true.That question is: How could the Holocaust happen? His response is an exploration of German society and its ingrained anti-semitism that demands a fundamental revision of our thinking about the years 1933-1945.The author marshals fresh, primary evidence - including extensive testimony from the actual perpetrators - to show that the killers were ordinary Germans who were not compelled to act as they did (they knew they could refuse without retribution) yet they killed willingly and zealously.