As a previous editor pointed out, Jews had been subject to widespread suspicion long before Hitler's time; not because they crucified Christ as response #1 implies, but because they insisted on maintaining their own culture and traditions. Among those traditions was their religion, which meant they refused to embrace Christianity. Hitler had been stooped in anti-semitism most of his life. His favorite composer was Richard Wagner who was a bitter and unrepentant anti-Semite. As a youth, he frequently read a racy periodical known as Ostara which contained anti-semitic rants. Anti-semitism in Europe had been around since at least the First Crusade, when Peter the Hermit led the Peasants Crusade to massacre thousands of German Jews.
HItler's anti-Semitism was probably not significantly greater than many of his ilk; however with his charisma he soon became the focal point of that hatred and was able to focus it more clearly into a weapon. I do not agree that the German people did this for love of Hitler; they were used to giving and accepting orders without question, the famous Fuhrerprinzep.
An excellent resource you might consider is R.G.L.Waite's: The Psychopathic God: Adolf Hitler.
You ought to refer to Hitler's book Mein Kampf in which he wrote all his thoughts about the Jews and everything else. There is some coverage of this book in eNotes which you can access immediately by clicking on the reference link below. At one time when the book came out in English translation it was a big best-seller and was printed in serialized form in some American newspapers. You could do your entire talk show by getting a copy of Mein Kampf and asking "Hitler" to comment on excerpts you quote directly from his book in his own words. The book was a warning to the whole world but was not taken sufficiently seriously.
There are at least three possible answers to this.
First, antisemitism was something that had been around in Europe for centuries. It had its roots in religion because Jews were seen as the ones who killed Christ. Hitler's hatred of Jews may simply have come out of this tradition.
Second, there was the need for a scapegoat for Germany's problems. After WWI, Germany had tremendous problems. It was helpful for Hitler to blame these problems on the Jews rather than having to look at the real causes.
Finally, Hitler might have actually believed in the racial rhetoric that he espoused. He might have believed that Jews were subhumans who destroyed every civilization that they contacted. He might truly have believed that Jews were destroying German civilization.
If you are asking a "fake Hitler" you will have to decide which of these is the truth (or which one you think he'd give as an answer) since there is no way to know for sure.
The actor Robert Shaw, was also interested in this and other questions concerning the how and why of the Holocaust. In his play, The Man In The Glass Booth, he has his protagonist explain that what the Germans had not grown out of hatred for the Jews but on the contrary, out of love for Hitler.
You might find Shaw's take on this of some help as you formulate your own play.
That scene can be found at this link, starting at minute 3 and 50 seconds.