Raphael Lemkin coined the term genocide (a combination of the Ancient Greek word génos (γένος, meaning "race" or "people") with the Latin caedere, "to kill") in his book Axis Rule in Occupied Europe. There are genocides that happened on religious, political, or even race bases. Take a look at some of the most ferocious genocides in mankind's history."
The Armenian Genocide , also known as the Armenian Holocaust, was the Ottoman government's systematic extermination of 1.5 million Armenians, mostly citizens within the Ottoman Empire. The starting date is conventionally held to be 24 April 1915, the day that Ottoman authorities rounded up, arrested, and deported from Constantinople (now Istanbul) to the region of Angora (Ankara), 235 to 270 Armenian intellectuals and community leaders, the majority of whom were eventually murdered. The genocide was carried out during and after World War I and implemented in two phases—the wholesale killing of the able-bodied male population through massacre and subjection of army conscripts to forced labor, followed by the deportation of women, children, the elderly, and the infirm on death marches leading to the Syrian Desert. Driven forward by military escorts, the deportees were deprived of food and water and subjected to periodic robbery, rape, and massacre. Other ethnic groups were similarly targeted for extermination in the Assyrian genocide and the Greek genocide, and their treatment is considered by some historians to be part of the same genocidal policy. Most Armenian diaspora communities around the world came into being as a direct result of the genocide.
The Rwandan genocide, also known as the genocide against the Tutsi, was a mass slaughter of Tutsi and moderate Hutu in Rwanda, which took place between 7 April and 15 July 1994 during the Rwandan Civil War.