The correct answer to this open question is the following.
Unfortunately, you did not include the article, the name of the article, a link to it, or any other kind of reference. Without that information, we do not know what you are talking about.
However, trying to help you, we can comment on the following general terms.
We assume you are talking about the letter titled "Letter From Birmingham Jail," written by civil rights activist leader Dr. Martin Luther King Jr.
The important idea in this article explains why Martin Luther King made the choices described in the letter is that King wanted to respond to all the critics and criticism that questioned his motives and methods. He tried to clearly explain his motives, assuming that his critics had valid inquiries.
Here is where he explains how he chose a non-violent approach to lead the civil rights movement and the purpose of this strategy.