And if you were white and working class, listen to the songs of Bruce Springsteen to get a sense of the frustrations.

BBC: Class calculator: A US view of the class system

But since January 2003 Mr Badnarik has been criss-crossing the country, making speeches and teaching a freelance class on the United States constitution to anyone who will listen.

ECONOMIST: The Libertarians choose their man

Class diversity teaches you to listen, and value the opinions of others.

FORBES: Shaking the MBA Martini: Diversity Is the New Cocktail

Now, with these teachers -- listen, with these teachers, we will actually be able to reduce class size in the first, second and third grades to an average of 18 students a class all across America.

CNN: State Of The Union

The two cut up in class, but it was easy to get them to listen.

CNN: Ex-NBA star coaches middle school, transforms his 'hood