The problem isn't that people don't understand how good things are. It's that they know, from personal experience, that things really aren't that good.
Paul KrugmanYes, over the centuries economic progress has reduced some gross disparities - modern Americans are relatively unlikely to simply starve to death (though it can happen), so in that sense the gap between rich and poor has narrowed. But the question isn't whether society is, in some sense, more equal than it was in 1900. It's whether it is radically more unequal than it was in 1970. And of course it is.
Paul KrugmanWhat happened after 9/11 - and I think even people on the right know this, whether they admit it or not - was deeply shameful. The atrocity should have been a unifying event, but instead it became a wedge issue. Fake heroes like Bernie Kerik, Rudy Giuliani, and, yes, George W. Bush raced to cash in on the horror. And then the attack was used to justify an unrelated war the neocons wanted to fight, for all the wrong reasons....The memory of 9/11 has been irrevocably poisoned; it has become an occasion for shame. And in its heart, the nation knows it.
Paul Krugman