The New York Times Magazine is running a number of article on poverty and class in America. I highly recommend taking the thirty minutes or so it will take to read through some of these articles. They do a great job highlighting issues of class that increasingly present themselves in U.S. society, especially as the wealthy have been getting wealthier and the poor have been getting poorer over the last 30 years or so.
The Class-Consciousness Raiser
Shop Stewards on Fantasy Island?
The Inequality Conundrum