Genocide is an old crime and a new concept. In a way, however, it seems difficult to explain the genocide to those who are not affected by it. everyone agrees with the necessity of legal confrontation with the crime of killing humans And any country has a law to prohibit and punish this crime. But the mass destruction of a group of humans by another is in the jurisdiction of different legal liability. Where does that hate come from? How can a country incite such hostility against a group of its own people? What types of conditions can cause this kind of massacre? What kind of ideological vision of the present and future leads this process? What kind of community are these people looking for to build-up? And what scientific words can fully describe these fierce actions?