1. What is Dr. Martin Luther King, Jr. responding to in this letter?

King's letter, dated April 16, 1963, responded to several criticisms made by the "A Call for Unity" clergymen, who agreed that social injustices existed but argued that the battle against racial segregation should be fought solely in the courts and not in the streets. They believed that King should not be breaking any laws or causing public unrest for his cause.