C. Freedom is a fundamental right of all humankind.
Explanation:
The universal theme that is expressed through this speech is freedom because Martin Luther King Jr. is talking about how the Negroes of their community are being treated horribly, with violence and cruel words and discrimination. He is talking about the idea of fighting against the racial injustice that they are facing, and how the Negroes are silenced by the people around them. Dr. King describes how the Negro aren't allowed to vote, even though it is considered to be a freedom a person rightfully has.
<em>"The marvelous new militancy which has engulfed the Negro community must not lead us to distrust of all white people, for many of our white brothers, as evidenced by their presence here today, have come to realize that their destiny is tied up with our destiny and their </em><u><em>freedom</em></u><em> is inextricably bound to our </em><u><em>freedom</em></u><em>. We cannot walk alone."</em>
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