- By Sam Sokol When a German teenager named Setti Pfeiffer begins her day in Israel helping severely disabled children, she often thinks of her great-grandfathers. Almost eight decades ago, Pfeifferโs maternal great-grandfather Herman Bernhardt helped build the Auschwitz death camp. And while she doesnโt know as much about her great-grandfather on her fatherโs side, the 18-year old believes that