Adolf Hitler and his minister of propaganda, Joseph Goebbels, launched a massive campaign to convince the German people (and captured countries as this Dutch ww2 era poster proves) that the Jews were their enemies. Having taken over the press, they spread lies blaming Jews for all of Germany’s problems, including the loss of World War I. One outrageous lie dating back to the Middle Ages claimed that Jews engaged in the ritual killings of Christian children and used their blood in the unleavened bread eaten at Passover.