What does MLK mean by the phrase "There comes a time when the cup of endurance runs over, and men are no longer willing to be plunged into the
abyss of despair" in this passage?

Which line from the poem above illustrates alliteration? “long have i known a glory in it all” “thou’st made the world too beautiful this year” “to lift the lean of that black bluff! ” “my soul is all but out of me”