Hi Roger,
I focus on "middle class" because Americans of the lower class are a little more likely to tell someone to go to hell, even though their situation is objectively more desperate. They are also a lot more likely to be physically violent.
Middle class Americans have a weird passivity that I have seen take over gradually. It is more than a little frightening, since the proclivity to violence has not gone away - witness the effect if one of them thinks you have "cut them off" on the expressway. You have the sense that nasty stuff lies just beneath the surface. I look at Jaeger's photos, and see faces that look like some of my fellow Americans, and I can easily make uncomfortable connections.
I do not idealize the world of my youth - for example, there was a level of overt racism that is unthinkable today. But neither do I believe that our society has progressed in the ways that some fantasize. People are careful to not say racist things because they will get in trouble for it now, just like they are careful to maintain the corporate line and not appear "different". Frankly, it is difficult to sort out - nowadays people are supposedly free to be individuals, but they seem to be individual in highly stereotypical ways.
On a positive note, the Occupy movement has given me some hope. As disorganized as it may be, it has the potential to shake people out of their stupor.
Randy