Since we are talking about media and propaganda from Chapter 1 of the book, I thought you'd like to see more on the issue. And of course there is a lot more!
Just google it and poof! Millions of readable bits of information including, of course, a wikipedia article on the media propaganda model.
As stated in class, I think the propaganda model overstates it, but the truth is closer to that than it is the democratic postulate. We are simply not being informed of the key facts we need to function as a democracy.