Anti capitalism and pro economic redistribution?
> The evils of capitalism are as real as the evils of militarism and racism. The problems of racial injustice and economic injustice cannot be solved without a radical redistribution of political and economic power. [1]
That white people should radically support racial justice?
> I must confess that over the past few years I have been gravely disappointed with the white moderate. I have almost reached the regrettable conclusion that the Negro’s great stumbling block in his stride toward freedom is not the White Citizen’s Counciler or the Ku Klux Klanner, but the white moderate, who is more devoted to ‘order’ than to justice. [2]
That riots are understandable in the face of oppression?
> But it is not enough for me to stand before you tonight and condemn riots. It would be morally irresponsible for me to do that without, at the same time, condemning the contingent, intolerable conditions that exist in our society. These conditions are the things that cause individuals to feel that they have no other alternative than to engage in violent rebellions to get attention. And I must say tonight that a riot is the language of the unheard. And what is it America has failed to hear?...It has failed to hear that the promises of freedom and justice have not been met. And it has failed to hear that large segments of white society are more concerned about tranquility and the status quo than about justice and humanity. [3]
The fact is that MLK was a radical who was opposed by most white people. When he died, 75% of the American public disliked him. It's only in retrospect that conservatives have tried to whitewash his legacy, pretending to support racial progress while opposing the very things he stood for.
[1] https://www.cityheightscdc.org/stories/mlk-quotes-too-radica...
[2] https://www.latimes.com/opinion/letters-to-the-editor/story/...
[3] https://www.salon.com/2017/01/16/martin-luther-king-jr-the-r...