Why Hitler killed thousands of Jews?

He believed in a superior, perfect race of blonde haired and blue eyed people, which jews as well as black and ethnic people did not fit into and therefore he had to rid his country and eventually the world of such "filth". This is ironic because Hitler looked very much like the stereo-typical Jew with his dark hair, eyes and large nose. It might also be said that Hitler was intimidated by the Jewish because they were wealthy and intelligent individuals, therefore an immediate threat to his power.