To what audience did Martin Luther King Jr. direct his speech?

(I'm assuming it deleted my first one because I linked an article that may help explain a little better) But I'd have to say the last one which is ' People who agreed with his ideas and had similar hopes and people who did not'

Explanation: Martin Luther King Jr. sought to raise the public consciousness of racism, to end racial discrimination and segregation in the United States. While his goal was racial equality, King plotted out a series of smaller objectives that involved local grassroots campaigns for equal rights for African Americans. not my words

i dont have that book