Sonke Neitzel and Harald Welzer opine that the Wehrmacht "were participants in, if not executioners of, unparalleled mass murder." Using transcriptions of secret records ofconversations among POWs, they conclude that most soldiers were not interested in ideology and politics. In reality, being a Nazi, supporting anti-Semitism and possessing the willingness to kill and commit unnecessary violence usually had nothing to do with each others: many hated the Jews but were shocked at mass extermination by firing squads, while some "anti-Nazis" supported anti-Jewish policies.