The correct answers are A) Birmingham courts have been unjust to African Americans. B) City leaders refuse to negotiate in good faith with African Americans.
What King used to support the need for protest were the following: Birmingham courts have been unjust to African Americans and city leaders refuse to negotiate in good faith with African Americans.
What Dr. Martin Luther King Jr. did was to apply the non-violence protests that were first used by the Mahatma Gandhi, in India. Through non-violent demonstrations, Dr. King united thousands of African Americans and some White supporters to support civil rights movements and actions. For instance, in his "Letter From Birmingham Jail," King explains that those demonstrations were needed to pressure local national and local leaders to confront the issue and have a solution.