sentences:  Germany and its allies killed up to 220,000 Roma, around 25 percent of the community in Europe, in what the Romani people call the "Pořajmos".Robert Ritter, head of the "Rassenhygienische und Bevolkerungsbiologische Forschungsstelle" called them "a peculiar form of the human species who are incapable of development and came about by mutation".In May 1942 they were placed under similar laws to the Jews, and in December Himmler ordered that they be sent to Auschwitz, unless they had served in the Wehrmacht.