The latest issue of the New York Review of Books has an article entitled “More Unequal Than You Think” which reviews The Spirit Level and three other books concerned with inequality, http://www.nybooks.com/articles/archives/2012/feb/23/were-more-unequal-you-think/. The article is very worthwhile reading. Solutions may come from many sources. Many efforts are needed.
The New York Times Columnist and author David Brooks has an article about the weakening of the social fabric in the U.S., http://www.nytimes.com/2012/02/14/opinion/brooks-the-materialist-fallacy.html?_r=1&ref=davidbrooks. It contains interesting commentary and cites various theorists for explanations, but his prescription for “bourgeois paternalism” is not impressive.