Robert Benmosche, the chief executive of the American International Group, said something stupid the other day. And we should be glad, because his comments help highlight an important but rarely discussed cost of extreme income inequality — namely, the rise of a small but powerful group of what can only be called sociopaths.  http://www.nytimes.com/2013/09/27/opinion/krugman-plutocrats-feeling-persecuted.html?src=me&ref=general  Mr. […]