How does Harper Lee use minor characters in To Kill a Mockingbird to explore some of the main concerns in the novel?

How does Harper Lee use minor characters in To Kill a Mockingbird to explore some of the main concerns in the novel?
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Harper Lee uses minor characters in a variety of different ways to help explore and expose some of the main concerns brought up in the book, ranging from strict town morals, justice, all the way to racism and death due to racism. I have chosen to outline some of the ways in which Harper Lee uses three minor characters, Mayella Ewell, Heck Tate and Dolfus Raymond, to help emphasise and explore some of the major concerns in the book.
Maye…