FROM CNN's Jack Cafferty: The middle class in this country isn't what it used to be. [cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2010/images/02/02/art.re.jpg caption=""] Since the end of World War II, middle class America has always meant a certain kind of security. If you got a good education and worked hard, there was the promise of success – being able … Continue reading How has definition of 'middle class American' changed?