The correct answer to this open question is the following.
The element that best expresses Dr. King's stand on Civil Rights is his desire to have a country in which every single citizen is free, regardless of race or gender.
Dr. Martin Luther King Jr. clearly established that every citizen in the United States has the same rights under the Constitution and deserves the same liberties.
We can exemplify this when he said in the speech: "We can never be satisfied as long as the Black is the victim of the unspeakable horrors of police brutality."
Or this one: "I have a dream that one day this nation will rise up and live out the true meaning of its creed: 'We hold these truths to be self-evident; that all men are created equal.'"
King makes allusion to multiple other texts in the course of his "I Have a Dream" speech, such as the Declaration of Independence and the Emancipation Proclamation.