Yоu аre аt the lаrgest event оf the entire Civil Rights Mоvement. You are standing alongside the Reflecting Pool in front of the Lincoln Memorial. You are so far away from the stage that you can barely hear the speaker. You are able to make out a few words he is saying..."I have a dream that one day down in Alabama, little black boys and black girls can hold hands with little white boys and white girls as sisters and brothers...". Who is the speaker?