Huxley juxtaposes dictatorships of the past (which ruled with physical violence) with how he envisions dictatorships of the future…
HUXLEY: But, if you want to preserve your power indefinitely, you have to get the consent of the ruled, and this they will do partly by drugs as I foresaw in “Brave New World,” partly by these new techniques of propaganda.
They will do it by bypassing the sort of rational side of man and appealing to his subconscious and his deeper emotions, and his physiology even, and so, making him actually love his slavery.
I mean, I think, this is the danger that actually people may be, in some ways, happy under the new regime, but that they will be happy in situations where they oughtn’t to be happy.
Link – full text & video of entire interview.