Based on details in the letter, what do you know about kings position and the events that prompted him to wirte his letter? what claim is he supporting in this argument

This question is about  the "Letter from Birmingham Jail" written by Martin Luther King Jr.

It is an open letter in defense to their staged nonviolent resistant to racism. His reasons for staging the resistance were the following
1) He and his staff were invited to be present and support the resistance. He was a part of an organization that has an affiliate in Birmingham.
2) He is not an outsider of Birmingham because he is still a citizen of the United States of America.
3) It is his duty as a human being to stand up for what is right and protect the rights of others in times of injustice and discrimination.

The main themes of the play are: fate and free will with the inevitability of oracular predictions is a theme that often occurs in greek tragedies the conflict between the individual and the state similar to that in sophocles’ “antigone” and   people’s willingness to ignore painful truths both oedipus and jocasta clutch at unlikely details in order to avoiding facing up to the inceasingly apparent truth and sight and blindness the irony that the blind seer tiresius can actually “see” more clearly than the supposedly clear-eyed oedipus, who is in reality blind to the truth about his origins and his inadvertent crimes.