 The second problem was the "differential relevance" of "historicization".Friedländer argued that the study of the Nazi period was "global", that is it belongs to everyone, and that focusing on everyday life was a particular interest for German historians.Friedländer asserted that for non-Germans, the history of Nazi ideology in practice, especially in regards to war and genocide were vastly more important than "Alltagsgeschichte" ("history of everyday life").