The act of Genocide, which is characterised by a calculated effort to exterminate a targeted group of people based on their race, religion, ethnicity, or nationality is probably the most atrocious human rights violation in international law. World history has seen and condemned genocides like the Nazi Holocaust, the Rwandan massacre, and the Darfur crises, which are given as prominent examples in any discussion of genocide. However, this overly simplistic and state-centric conception of genocide ignores totalitarian and colonial genocides that were undertaken before the Holocaust. This article highlights these neglected genocides while further exploring the reasons for their removal or relegation to the bottom of the international community's memory hole.