Propaganda in the ordinary sense of the term plays a less important part in a consumer society where people greet all official pronouncements with suspicion.
This society cannot go forward the way we have been going forward where the gap between the rich and the poor keeps growing. It's not politically viable it's not morally right it's just not going to happen.
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In modern society where most people live in cities and where both needs and wishes are absolved through the same remote agency – money – the distinction between wishes and needs has altogether vanished.