Why is King hopeful that his readers will agree with the need for brotherhood and equality among people?

King is hopeful that his readers will recognize the necessity of brotherhood and equality because he believes these principles are fundamental to achieving justice and harmony in society. He appeals to shared values of love, compassion, and humanity, arguing that understanding and empathy can bridge divides. By emphasizing common struggles and the interconnectedness of all people, he encourages readers to envision a future where unity prevails over division. Ultimately, he seeks to inspire collective action toward a more equitable world.