I havent read all the rep[lies so perhaps someone has said it but here goes.
The Holocaust dates back to an ancient Christian law that forbids charging interest on loans. It was called usury and illegal for Christians to practice. However people still needed loans and to give loans interest was required to make it worth the practice. Jews were not bound by this law and so could lend money and charge interest. This practice lead to Jews becoming the controllers of the monetary funds. In addition to normal civilian loans they also lent to leaders and kings. Often kings and rulers in Europe became indebted to the Jewish establishment to pay for wars and excesses. When these kings realized they could not repay the loans they decide that Jews were enemies of the state. They then launched attacks against the Jews to avoid paying the debts back. Obviously hundreds of years of this practice and the fact that they were the bankers charging interest on loans led to a general hatred of the Jewish people and an association of Jews with money grubbing individuals who would do anything for to gain more money. Now flash forward to to WW I Hitler is a messenger in the army, which means he runs in between trenches delivering handwritten messages. This is a dangerous job and eventually he is caught in a gas attack and is severely injured as a result. Mind you at the time Germany is winning the war and looks poised to take over Europe as the dominate country in the world. However by the time he awakens in a hospital bed and is able to grasp what is happing in the war the Americans have flooded in and Germany has been defeated. From his perspective and many Germans perspective it seemed impossible that they would lose this war. It appeared that someone had to have sold them out to the allied forces and this had caused the defeat. After all who could imagine their own country being broken in such a fashion? Now fast forward to the peace treaty of WWI The French and British are mad that they have been put through such an ordeal and so they impose horrible sanctions on all the losing parties including Germany. These sanctions along with the great depression drive the German people in to a deep financial hole. Of course Hitler and the German people believe they have been wronged and that it must be the fault of the Jews who had sold them out in the last war. Poor people with nothing to lose vote Hitler in to office on a plan of bringing Germany back to prominence on the world stage. Hitler believes that he is destined to lead the German people in to a great new age. He also as a secondary plan believes that the way to ensure that his new world order will remain intact is to destroy potential threats to it from inside and outside the country. On the top of his list are Jews who he believes have sold the German people out for money because in his mind they are greedy money driven people who will do anything for profit. He starts systematically eliminating them as a threat. Most German people are really not aware of this and even if they were aware they are more concerned with the global war that has enveloped their country. Most German soldiers do what soldiers all over the world do they follow orders and kill Jews because they were ordered to and in all reality they have been brought up to believe that Jews are a sub species of human who has ruined Germany. While this version of how the Holocaust happened may not seem pretty or demonize the Germans as much as it should it is what happened. All humans are weak and will act accordingly in groups. If you don't think that you would act the same look at the clothes/shoes you are wearing, my guess is that at least one if not more articles have been made by slave labor or close to in a country like China or Guatemala. Humans are an evil species and capable of immense cruelty. Don't be surprised by Holocausts they are all to common.