Nazi crimes required the complicity of a variety of professionals Jeff Jacoby’s “The drawing that killed my father’s family” was chilling (Ideas, Jan. 25). As Jacoby detailed, the architect who drafted the first rendering of a facility capable of incinerating human remains on an industrial scale was clearly complicit in facilitating genocide. His acquittal in 1972 over his role in Nazi crimes compounded the tragedy. The Holocaust required complicity of a wide variety of professionals. The Final Solution was about the efficient murder of Jews. I visited Auschwitz on a fact-finding trip in June 1979 with the President’s Commission on...