Answer and Explanation:
1. It features a text by Martin Luther King. Although he does not say what text it was, he says it is the text where King quotes Clarence Jones' metaphor. With this, Euchner, uses King's text as a basis for the thoughts he will expound throughout the text, showing that his ideas are supported by someone admirable and easily recognized in society.
2. This helps readers to relate the concept of bad check to American society in relation to racism and the positioning towards blacks. This increases the understanding of Euchener's argument and extends the meaning of the text.