Late Ottoman genocides is a historiographical theory which claims that the concurrent Armenian, Greek, and Assyrian genocides that occurred during the 1910–1920s ought to be seen as part of a single event rather than separate policies led by the Young Turks. Although some sources, including "The Thirty-Year Genocide" by Benny Morris and Dror Ze'evi, characterize this event as a genocide of Christians, Dominik J. Schaller and contend that such an approach "ignores the Young Turks' massive violence against non-Christians", in particular against Muslim Kurds.