"But Master, even by our own dark creed, the humans are required to prove their willingness to be enslaved. We cannot move forward with the Great Culling without proof of acquiescence. "
"Look around you, my loyal darkling. A slave is a biological unit without a voice. Look around and tell me what you see."
"I see biological units walking around muzzled like sick dogs."
"Exactly. They have acquiesced. It is done."