Answer: when a writer points to a problem caused by social customs without explicitly challenging those customs.
A social commentary is the use of rhetorical devices in order to comment on the problems of society. This is usually a critique, and it is intended to promote change or to appeal to people's sense of justice. However, when this commentary is done subconsciously, the writer points towards the problem but does not explicitly challenge the customs.
Boo Radley was a good person but perceived as someone who must be isolated. He himself chose to isolate himself from society. The justice about whether to judge him as a murderer or a defender was overlooked by Atticus because of Radley's history. The instability of Boo's family highlights the theme of how even within homes, equal human rights can be ignored. Aunt Alexandra is traditional and prejudice at first but becomes open to the views of Atticus because of her love for the family.
I would say fast because it feels like it’s tension in the phrase