The article is a letter written by Martin Luther King Jr. from a Birmingham jail, where he responds to criticism from fellow clergymen regarding his activities in the city. King explains that he is in Birmingham because of the city's injustices and segregation, and that his nonviolent direct action program is necessary to bring attention to these issues. He argues that there are two types of laws, just and unjust, and that one has a moral responsibility to disobey unjust laws. King also emphasizes the importance of nonviolent resistance and the need for negotiation and dialogue to achieve social change.