Deception refers to something that is deceitful or deceptive, and this does not just mean people. Mother Nature may practice deception, such as when a mirage appears in the desert or a tornado suddenly appears from a clear sky without any warning. People who engage in deception usually do so in order to gain something or manipulate others, and this shows a lack of honesty and values.
When people say they do not care what others think of them, for the most part they deceive themselves. Generally they mean only that they will do as they choose, in the confidence that no one will know their vagaries; and at the utmost only that they are willing to act contrary to the opinion of the majorities because they are supported by the approval of their neighbors. It’s not difficult to be unconventional in the eyes of the world when your unconventionality is but the convention of your set
I think there is a good reason why the propaganda system works that way. It recognizes that the public will not support the actual policies. Therefore it is important to prevent any knowledge or understanding of them