Final answer:
Martin Luther King Jr.'s letter critiques White clergymen for not supporting nonviolent actions seeking racial equality and social justice, which he deems morally imperative and necessary in contrast to their cautious, law-and-order approach.
Step-by-step explanation:
The civil rights tactics that raised objections from the White clergymen addressed in Martin Luther King Jr.'s Letter from Birmingham Jail included nonviolent protests, sit-ins, and marches. These actions were criticized by some White religious leaders who felt they incited civil unrest and broke laws. However, King defended these tactics as necessary to achieve social justice and racial equality, stating that laws that uphold segregation and deny citizens their constitutional rights are unjust and must be opposed through nonviolent resistance. He emphasized that justice was a moral imperative beyond legal mandates, invoking a deeper, moral calling for the clergymen to recognize the righteousness of the integration efforts. King's letter eloquently outlines the frustration with the slow pace of progress and the hypocrisy he perceived in the church's stance on racial injustice.