I can think of a reason why someone would say that. Attention. Perhaps if I were an angry little guy who has to blame someone else for my own failings. Someone who has little to say but gets some kind of lift from the only human attention he ever does receive. Even though the attention is the disgust of civilized people it is something. I see this all the time in small children and in adults who can't get past that phase of emotional development. I see these "isms", like racism, as the result of people who know there is something wrong with who they are but protect their delicate ego by projecting their problems and scapegoating rather than face their failings and better themselves.   

Obviously hitler was a maniac and only the most self deluded personality would think otherwise.