Read the excerpt from Martin Luther King Jr.’s "I Have a Dream” speech. This note [the Declaration of Independence and the Constitution] was a promise that all men . . . would be guaranteed the "unalienable Rights” of "Life, Liberty, and the pursuit of Happiness.” It is obvious today that America has defaulted on this promissory note.

–"I Have a Dream,”
Martin Luther King Jr.

What is the best summary of this part of the speech?

African Americans do not enjoy the rights of full citizenship.
Modern America is not fulfilling promises made to African Americans in earlier times.
The United States does not pay its debts as promised.
African Americans are owed reparations for the abuses of slavery.