In "Letter from Birmingham Jail" by Martin Luther King Jr., King offered a multi-faceted rebuttal to his critics' claim that his nonviolent resistance tactics were inappropriate and counterproductive. One of the main ways he did this was by questioning the fairness of the laws themselves.
King argued that laws are only just if they promote the common good and that any law that violates the fundamental principles of justice is unjust. He went on to argue that segregation laws were inherently unjust because they violated the basic principles of human dignity and equality. By questioning the morality of the laws themselves, King was able to make a powerful argument for why it was not only morally justifiable but necessary, to break these unjust laws through civil disobedience.
In addition to questioning the fairness of the laws, King also addressed his critics' concerns about the timing and method of his protests. He argued that waiting for change to come through the legal system alone was not enough and that direct action was necessary to bring attention to the injustices faced by Black Americans in the South. He also highlighted the importance of nonviolent resistance, arguing that it was the most effective way to bring about lasting change without resorting to violence.
Overall, King's rebuttal was a masterful piece of persuasive writing that addressed his critics' concerns head-on and provided a compelling argument for why civil disobedience was not only morally justifiable but necessary in the fight for racial justice. By questioning the morality of the laws themselves and providing evidence to support his claims, he made a powerful case for why direct action was necessary to effect social change.