Dr. King asked this question in his report to the 11th Convention of the Southern Christian Leadership Conference.
one day we must ask the question, "Why are there forty million poor people in America?" And when you begin to ask that question, you are raising a question about the economic system, about a broader distribution of wealth. When you ask that question, you begin to question the capitalistic economy. (Yes) And I'm simply saying that more and more, we've got to begin to ask questions about the whole society.