How about neither. In reference to the recent arguments about the preferred political party of MLK Jr, which was provoked by a claim in a recent advertisement from the current POTUS, they had me questioning the same. Considering everything MLK spoke of, I feel strongly that he wasn’t affiliated with either of the political parties. The following is part of a statement from his daughter, in response to the suggestion that her father was a republican.
— “My father was working for an America with leaders who have answered the call to conscience and compassionate action. He said, ‘We need leaders not in love with money but in love with justice. Not in love with publicity but in love with humanity.’” Bernice King
[Image Source: MilwaukeeIndependent.com, “A Union Man: Dr. Martin Luther King Jr. Saw Organized Labor As A Cure for Pervasive Discrimination”]