If you're curious, the first portion of his "Letter from a Birmingham Jail" is essentially a case study in organizing and guiding a disparate social movement.
(When I wrote that King had 'no power but a voice', I didn't mean 'no power but oration'; I meant that all King could do was speak to people - individually, in organzing meetings, publicly, etc. - and try to persuade them.)
Here’s a choice quote he gave in 1967 in his “Three Evils of Society” speech.
> Again we have deluded ourselves into believing the myth that Capitalism grew and prospered out of the protestant ethic of hard word and sacrifice, the fact is that Capitalism was build on the exploitation and suffering of black slaves and continues to thrive on the exploitation of the poor – both black and white, both here and abroad.
Not exactly mild mannered stuff.
https://www.huffpost.com/entry/interview-transcript-noam_b_4...