The interesting question is not whether unconscious racial sexual prejudice exists, but what we, including the Supreme Court, are willing to do about it. The Shadow knows.
Movies know, too.
Not a surprising personality trait in a former lawyer who is now a retired San Francisco police detective. Scotty has little interest in life, and less in sex. Scotty seems a harmless, if lonely, man, but Hitchcock shows us that he has the potential to become a sadist, a monster whose need to remake the world and people in the image of his fantasies leads to violence. He has been told by her husband that Madeleine has threatened suicide and Scotty earnestly tries to save her from that fate, but he is unsuccessful. When she does die, he blames himself for her death and falls into deep depression.