Answer:
Martin Luther is using ethos at the beginning of his speech where he was to argument his attitude connecting himself with Afroamericans and Americans and alluding to the change that needs to be done.
Step-by-step explanation:
“I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character.”
He is using ethos to make his public feel the words that he is saying. His way he supports his words and people believe him.