I would argue you’ve missed a lot about King’s arguments, especially in the late 60s.
The new phase is a struggle for genuine equality. It is not merely a struggle for decency now, it is not merely a struggle to get rid of the brutality of a Bull Connor and a Jim Clark. It is now a struggle for genuine equality on all levels, and this will be a much more difficult struggle. You see, the gains in the first period, or the first era of struggle, were obtained from the power structure at bargain rates; it didn’t cost the nation anything to integrate lunch counters. It didn’t cost the nation anything to integrate hotels and motels. It didn’t cost the nation a penny to guarantee the right to vote. Now we are in a period where it will cost the nation billions of dollars to get rid of poverty, to get rid of slums, to make quality integrated education a reality.
From King’s Where Do We Go From Here:
pg. 77
It seems to be a fact of life that human beings cannot continue to do wrong without eventually reaching out for some rationalization to clothe their acts in the garments of righteousness. And so, with the growth of slavery, men had to convince themselves that a system which was so economically profitable was morally justifiable. The attempt to give moral sanction to a profitable system gave birth to the doctrine of white supremacy.
(He uses the term ‘white supremacy’ 12 times in the book, FWIW)
pg. 37
Power, properly understood, is the ability to achieve purpose. It is the strength required to bring about social, political or economic changes. In this sense power is not only desirable but necessary in order to implement the demands of love and justice. … There is nothing essentially wrong with power. The problem is that in America power is unequally distributed.
pg. 109
The dilemma of white America is the source and cause of the dilemma of Negro America. Just as the ambivalence of white Americans grows out of their oppressor status, the predicament of Negro Americans grows out of their oppressed status. It is impossible for white Americans to grasp the depths and dimensions of the Negro’s dilemma without understanding what it means to be a Negro in America. Of course it is not easy to perform this act of empathy. Putting oneself in another person’s place is always fraught with difficulties. Over and over again it is said in the black ghettos of America that “no white person can ever understand what it means to be a Negro.” There is good reason for this assumption, for there is very little in the life and experience of white America that can compare to the curse this society has put on color.