I would compare Chris Keller in Miller's All My Sons to Biff in Death of a Salesman. Both grow up idolizing their fathers only to face a severe moment of disillusion as each realizes his father is a deeply flawed person. For Biff, this realization begins when he realizes his father is having an affair, as it destroys his faith in his father's moral character. This process of disillusionment is ongoing for him, as he realizes his father's fantasies and inflated assessment of his (Biff's) talents have damaged his life badly.
Chris's moment of truth comes when he is a little older. He too idolizes his father as a good man. However, when he comes back from the war, he has to face the facts that not only is his father caught up in a consumerist culture that acts as if World War II never happened, his father put money ahead of soldier's lives. Chris discovers that his father approved sending out faulty plane parts to the war effort in order to protect his company's reputation and profits, leading to the death of twenty-one pilots.
Both Biff and Chris act as forceful voices of truth in their respective plays. They both confront their fathers, trying to force them to face the reality that the actions they thought were helping their families were actually hurting them.