Your point is well taken. However, propaganda in America is much more insidious than propaganda in North Korea. Don't get me wrong, North Korea is a brutal place and I thank my lucky stars I was born here and not there.

In America, there is always the illusion of a raging debate, which causes people to identify with the views they are presented. In places like North Korea, the propaganda is much more heavy-handed and if you step out of line you are punished much more severely. This causes people to pay lip service to the official views, but not necessarily to believe it in their hearts. In America, stepping out of line is tolerated - to a degree.

EDIT: So perhaps what I should have said originally is not that America is the most heavily propagandized population, but that Americans are the victims of the most sophisticated propaganda machine.

Well, I'm certainly not inclined to argue with that.

Can you spot the irony?

I can spot a few different things at which you might be aiming the word "irony", but I'm not sure at which one of them, if any, you actually are.