Final answer:
Atticus's statement highlights the individuality inherent in each member of a mob, emphasizing their personal responsibility and potential to act morally despite the collective action.
Step-by-step explanation:
Atticus's statement "a mob is always made up of people, no matter what. Mr. Cunningham was part of a mob last night, but he was still a man." symbolizes the notion that individuals in a mob can still make personal choices and retain their humanity. He acknowledges that although a mob can act with a collective and often dangerous mindset, each member has the capacity to think and act as an individual. It is a call for recognizing and appealing to one's individual morals and ethics, even when they are part of a group that might be behaving irrationally or violently.