The first to slaughter were the Armenian nationalists

Maxime Gauin:

The first to slaughter were the Armenian nationalists, between November 1914 and April 1915. This is an excuse for nothing, this is a fact. Sean McMeekin, “The Russian Origins of the First World War”, Cambridge (MA)-London: Harvard University Press, 2011.

Michael A. Reynolds, “Shattering Empires. The Clash and Collapse of the Ottoman and Russian Empires, 1908-1918”, Cambridge-New York: Cambridge University Press, 2011.

Muslims Massacred by Armenians in Rawanduz

 

Kurds Massacred by Armenians

Jeremy Salt, "The Unmaking of the Middle East," Berkeley-Los Angeles-London: University of California Press, 2008, p. 67:

(Source: Maxime Gauin)