The late Ottoman genocides is a historiographical theory which sees the concurrent Armenian, Greek, and Assyrian genocides that occurred during the 1910s–1920s as parts of a single event rather than separate events which were initiated by the Young Turks. Although some sources, including The Thirty-Year Genocide by the historians Benny Morris and Dror Ze'evi, characterize this event as a genocide of Christians, others such as those written by the historians Dominik J. Schaller and contend that such an approach "ignores the Young Turks' massive violence against non-Christians", in particular against Muslim Kurds.