Because they have tagged them as undesirable and as the enemies of the state (in this case NG). Discrimination of the Romani people existed a very long time ago, even before the rise of Hitler and Nazi Germany. read more
Hitler murdered all ethnic groups and peoples that he did not consider Aryan or white enough. Examples of his victims are mentally and physically disabled, Jews, homosexuals, Slavs, and Gypsies. Hitler was trying to build the perfect man and he felt that these groups were inferior and would destroy this being genetically. read more