In paragraph 15, Dr. King uses rhetoric to emphasize the importance of nonviolent protest and to encourage the clergymen to join him in his struggle for civil rights. He states that "nonviolent direct action seeks to create such a crisis and foster such a tension that a community which has constantly refused to negotiate is forced to confront the issue." By emphasizing the power of nonviolent protest, Dr. King is able to advance his purpose of convincing the clergymen to join him in his struggle for civil rights