How does the jury represent American society?

The jury represents a cross-section of white male American society. The play juxtaposes a presumably wealthy stock broker (4th Juror) with someone who has admittedly lived in the slums his entire life (5th Juror), and we seem to have every level of working man in between. For many of the jurors, we have no more information than their occupation, which gives us an idea of socioeconomic level. These people are defined by what they do for a living. 7th Juror is even so tactless as to report his income of $28000, from selling marmalade, to the group.

Similarly, the idea of class in American society is brought to the forefront in the deliberation. 8th Juror immediately cites the boy's poor upbringing as a possible explanation for his juvenile criminal record and suggests that he has not been given adequate representation, due to his low social status. It calls into immediate question whether the American justice system is fair across classes.