The author expands on the ruling class's use of propaganda to incite and inculcate hatred in their subject populations to justify war crimes against their enemies.
By portraying all official enemies as savages, gooks, chinks, butchers, terrorists, evildoers, godless communists, or a never-ending parade of thugs auditioning for a starring role as the "next Hitler," wartime propaganda plays into our worst fears: the bogeyman. Our enemies, we learn, are never mere flesh-and-blood.