Incitement to genocide is a crime under international law which prohibits inciting (encouraging) the commission of genocide. An extreme form of hate speech, incitement to genocide is considered an inchoate offense and is theoretically subject to prosecution even if genocide does not occur, although charges have never been brought in an international court without mass violence having occurred. "Direct and public incitement to commit genocide" was forbidden by the Genocide Convention in 1948. Incitement to genocide is often cloaked in metaphor and euphemism and may take many forms beyond direct advocacy, including dehumanization and "accusation in a mirror". Historically, incitement to genocide has played a significant role in the commission of genocide, including the Armenian genocide, the Holocaust and the Rwandan genocide.