Here is a ledger of 11 million Jews, from the meeting minutes at the Wannsee Conference, which depicted genocide as an issue of logistics management. After seeing Sachsenhausen Concentration Camp in person, I felt the need to understand how such a place could be built, and such unspeakable things could happen. The full minutes were displayed in the same historic room where the relevant department heads agreed on the Final Solution and the mechanisms of the Holocaust reached full coordination. It took years to build up to this moment, starting with propaganda posters and rhetoric, incitement of hate crimes, destruction of the press, ghettoization, sterilization, deportations, gas trucks, labor camps tucked away in places people would never see. By this point, the bureaucracy was in place, and decisions were made while draped in the understated elegance of a villa with Romanesque flourishes.