"Examples one finds in the philosophical literature are somebody who's seen the trial of a child of theirs, where they're being proved guilty of some crime that would drive the parent into a depression, maybe a suicidal depression"

This quote by Robert Nozick is referring to an example of a situation that might result in an individual experiencing an anxiety or perhaps a suicidal anxiety. The example he provides is of a moms and dad who has seen their child being tried for a crime and condemned. This might be a distressing experience for the moms and dad, resulting in a deep anxiety or even suicidal thoughts. This quote highlights the fact that even seemingly small events can have a big influence on an individual's mental health. It is very important to remember that everybody's experience is various and that even apparently little events can have a big effect on a person's psychological health. It is important to be knowledgeable about the capacity for depression and to look for aid if required.