What is "Letter from Birmmingham Jail" about?you can read it here http://www.africa.upenn.edu/Articles_Gen/Letter_Birmingham.html
This letter by Dr. Martin Luther King, Jr. is a defense of his actions and a call for others to support the Civil Rights Movement. King wrote this letter in response to an open letter by a number of white clergy who were questioning the need for demonstrations and the appropriateness of those demonstrations that King was leading in Birmingham.
In the letter, King strongly defends both the need for the demonstrations and the appropriateness of demonstrating instead of negotiating. He chides the white clergy for valuing stability and order over justice. This is a strong defense of the tactics of the Civil Rights Movement and a call for all who love justice to support that movement.