Psychological projection is when humans defend themselves against the acknowledgement of their own dark urges by denying their existence in themselves, while attributing them to others. For example, a person who is rude may constantly accuse other people of being rude. According to some research, the projection of one's negative qualities onto others is a common process in everyday life. Such aggressive projections of displaced negative emotions can occur anywhere from the micro-level of interpersonal relationships, all the way up through to the macro-level of international politics, or even international armed conflict. See "Political Ponerology": http://ponerology.com/