This is a study of the general rise of irrational thinking (especially political and economic thinking) over the past few decades. Wheen has some great examples of this, plenty of passages which made me boggle at the craziness of people.
I was hoping that there would be a little more depth to it, though. There's no real analysis of why this might be happening. Nor is there any suggestions as to what might be done to deal with it.
Quite good, not unmissable.