Genocide is one of the most horrific crimes in human history, defined as the deliberate and systematic destruction of a national, ethnic, racial, or religious group. This page brings together all of History Crunch’s Genocide articles, covering the definition and causes of genocide, the major genocides of the 20th and 21st centuries including the Holocaust, Armenian Genocide, Cambodian Genocide, Rwandan Genocide, and others, the international response and justice systems developed to prevent and prosecute genocide, and the lasting significance of these events on the world.