Answer:
The author's choice of the word "muscle" helps readers picture Bull Connor as a bully because we often view bullies as strong people. Strong people are also known to have big muscles, so the use of this word in describing Bull Connor strengthens the fact that he was a bully.
Step-by-step explanation:
Who is a Bully?
A bully is a person that intimidates others through his words and actions. Such people infuse fear into their victims and appear to be powerful.
The use of the word muscle in describing a bully shows that he had enough strength to intimidate his victims. it had a connotative impact.