In the spring of 1944, my father and his family entered Auschwitz in a sealed boxcar from Hungary. Within a few hours of their arrival, my father’s parents and two youngest siblings were dead; before long, two older siblings were dead as well. The infrastructure that killed them — the gas chambers, the crematoria, the system for transporting corpses by the thousands to ovens each day so they could be turned to ash and smoke — had been designed by Dejaco and other SS architects: professionals complicit in facilitating genocide. Earlier this month, I traveled to Los Angeles to see...