Category "to-kill-a-mockingbird"

In allegorical sense what does the mad dog represent in "To Kill a Mockingbird"?

I cannot understand this particular moment in the movie. What does it represent for the story and how is it connected to the storyline? It appears to me that it

Why was Cunningham Sr. taken aback when Scout talks to him about entailment?

In the movie To Kill a Mockingbird, when the angry crowd reached the police-station to hurt Tom Robinson, they found Atticus Finch already sitting outside the d