"This note was a promise that all men, yes, black men as well as white men would be guaranteed the unalienable rights of life, liberty, and the pursuit of happiness." Dr. Martin Luther King Jr. appeals to ethos because he refers to his knowledge of The U.S. Declaration of Independence to show his audience that black people have the same unalienable rights according to the document (which are: life, liberty, and the pursuit of happiness. He uses expletive when he says "yes, black men as well." The word "yes" emphasize the message that black men are guaranteed the same rights as white men.
"We have also come to this hallowed spot to remind America of the fierce urgency of now. This is no time to engage in the luxury of cooling off or to take the tranquilizing drug of gradualism. Now is the time to make real the promises of democracy. Now is the time to rise from the dark and desolate valley of segregation to the sunlit path of racial justice. Now is the time to lift our nation from the quicksands of racial injustice to the solid rock of brotherhood. Now is the time to make justice a reality for all of God’s children." King uses anaphora to appeal to pathos. He repeats the word "now" to demand action, which makes people feel that they need to take action to make justice a reality for all of God's children.
" 1963 is not an end, but a beginning. And those who hope that the Negro needed to blow off steam and will now be content will have a rude awakening if the nation returns to business as usual. There will be neither rest nor tranquility in America until the Negro is granted his citizenship rights. The whirlwinds of revolt will continue to shake the foundations of our nation until the bright day of justice emerges." King appeals to logos because he reasons that revolts will continue to happen because there is no going back. By saying this, he shows how determined he is for black people to be granted citizenship rights. He uses expletive when he says 1963 is not an end, but a beginning which emphasizes that the movement will create new beginnings.