All My Sons by Arthur Miller can reasonably be seen as a withering critique of the American dream and the often damaging effect it has on people. The main character of the play, Joe Keller, becomes so obsessed with making money and being a successful businessman that he's prepared to cut corners and supply the military with what he knows full well to be faulty plane parts.
The consequences of Joe Keller's headlong pursuit of the American dream are truly disastrous, both for himself and others. In the process, his soul is corrupted by the pursuit of wealth. An essentially good man's moral values are warped by the prospect of riches. It's no exaggeration to say that in his attempt to gain the American dream, Joe Keller becomes a completely different person.
But however corrosive the effects of the American dream may be to Joe Keller, they are far more damaging to other people, such as the twenty-one pilots. Then there's Larry, Joe's son. When he found out about the faulty plane parts, he was so overcome by shame at what his father had done that he resolved to crash his plane deliberately. Larry, like the twenty-one pilots who died due to his father's greed, is one of just many people who've fallen victim to the single-minded pursuit of the American dream.