Paragraph 26: With reference to his audience, why is the letter from Texas effective?

In reference to the letter from Texas, the writer's words are effective because they prove King's point. The author speaks of time, and the way all things change with time.... he questions King's rush to achieve something (equal rights) that will eventually be achieved on their own.... without protest. The writer does not consider the history of inequality, the evil of oppressors, or the silence of people with good will. King responds, "We must come to see that human progress never rolls in on wheels of inevitability. It comes through the tireless efforts and persistent work of men willing to be coworkers with God, and without this hard work time itself becomes an ally of the forces of social stagnation."