The post office delivered the notifications of definition, expropriation, denaturalization, and deportation. The finance ministry confiscated Jewish wealth and property. German industrial and commercial firms fired Jewish workers, officers, and board members, even disenfranchising Jewish stockholders. The universities refused to admit Jewish students, denied degrees to those already enrolled, and dismissed Jewish faculty. Government transportation bureaus handled the building arrangements with the railroads for the trains that carried Jews to their death. And so the point that's being made here is this could not be done just with Hitler and some of his close associates. To kill millions of people on this scale, you needed an entire apparatus.