In 1940, Hattie McDaniel, who played 'Mammy' in Gone With the Wind, made history by becoming the first African American actress being nominated and winning "Best Supporting Actress." At the 12th Academy Awards ceremony, she was the only Black woman present in the room who could only attend the event held at the segregated Ambassador Hotel because producer David O. Selznick requested her admittance. However, she was banned from attending the film's Atlanta premiere. When…