Secondary antisemitism is a distinct kind of antisemitism which is said to have appeared after the end of World War II. It is often explained as being caused by —as opposed to in spite of— Auschwitz, pars pro toto for the Holocaust. One frequently quoted formulation of the concept, first published in Henryk M. Broder's 1986 book "Der Ewige Antisemit" ("The Eternal Antisemite"), stems from Zvi Rex, an Israeli psychologist, who coined the sentence: "The Germans will never forgive the Jews for Auschwitz." The term itself was coined by Peter Schönbach, a Frankfurt School co-worker of Theodor W. Adorno and Max Horkheimer, based on their Critical Theory.