This is pretty on the nose. It has a lot to do with the diversity of America and the fact that they see most other Americans as "the other", or an out group, an

This is pretty on the nose. It has a lot to do with the diversity of America and the fact that they see most other Americans as "the other", or an out group, and don't want to support them. I don't have the details on hand, but Robert Putnam (Political science, Harvard) did a study about Americas breakdown in civil engagement that speaks to this point quite a bit. Here's an article that talks about it: http://archive.boston.com/news/globe/ideas/articles/2007/08/05/the_downside_of_diversity/ http://archive.boston.com/news/globe/ideas/articles/2007/08/...