Since MLK said to judge a person by the content of their character rather than the color of their skin, anybody who followed these words would be AGAINST affirmative action.
He advocated for equal rights, and not for the special privileges we see today.
He was a Republican.
Dr. Alveda C. King, niece of Dr. Martin Luther King, Jr., affirms that her uncle was a Republican during his lifetime.
In Chapter 23 of his autobiography, King writes this about the 1964 Republican National Convention:
The Republican Party geared its appeal and program to racism, reaction, and extremism. All people of goodwill viewed with alarm and concern the frenzied wedding at the Cow Palace of the KKK with the radical right. The “best man” at this ceremony was a senator whose voting record, philosophy, and program were anathema to all the hard-won achievements of the past decade.
Senator Goldwater had neither the concern nor the comprehension necessary to grapple with this problem of poverty in the fashion that the historical moment dictated. On the urgent issue of civil rights, Senator Goldwater represented a philosophy that was morally indefensible and socially suicidal. While not himself a racist, Mr. Goldwater articulated a philosophy which gave aid and comfort to the racist. His candidacy and philosophy would serve as an umbrella under which extremists of all stripes would stand. In the light of these facts and because of my love for America,
I had no alternative but to urge every Negro and white person of goodwill to vote against Mr. Goldwater and to withdraw support from any Republican candidate that did not publicly disassociate himself from Senator Goldwater and his philosophy.
King barnstormed the country on behalf on Johnson in 1964, “maintaining only a thin veneer of nonpartisanship,” according to biographer Nick Kotz. King called Johnson’s win a “
great victory for the forces of progress and a defeat for the forces of retrogress.”
Here is what King had to say about Ronald Reagan, the hero of modern Republicans:
When a Hollywood performer, lacking distinction even as an actor can become a leading war hawk candidate for the Presidency, only the irrationalities induced by a war psychosis can explain such a melancholy turn of events.