I have no clue what "Take an empty shell off the streets" means. "Shell" seems to refer to "the basic outer structure of a building or vehicle" - I am not sure. What does it mean?
I swear I could not for a second view these people as anything but human. The best way to fashion a young hard dick like myself - "dick" being an acronym for "dedicated infantry combat killer" - is simple and the effect of racist indoctrination. Take an empty shell off the streets of Los Angeles or Brooklyn, or maybe from some Podunk town in Tennessee and in these days America isn't in short supply.
Source: The Untold History of the United States pp582