Aaron actually got it right.  While Latin docilis was used in a special sense  by St. Thomas, the word has always been used far more broadly to mean trainable or teachable.  Ovid even applies it to hair.  In English we are most likely to think of animals, like horses, subject to control by their masters, and I cannot think of a more appropriate term for the generation of humanoids being raised–not reared–by mass education and mass culture.  While slavery might imply the possibility that someone was forcibly enslaved against his will, docility implies the acquiescence of a domesticated beast.