Genocides are a big thing where countries put people at risk during a war or a time of poverty for their country, if people actually do something to stop these genocides and prevent these terrible crimes if they were committed, the world would never have to suffer like it had to suffer after the holocaust. What is a genocide? A genocide is a cruel crime that should never have been committed and can be prevented. What is the Holocaust? The Holocaust is a mass genocide that killed millions of people and left the world and the survivors haunted and traumatized for the rest of their lives.