1920s: In 1920, Marcus Garvey organizes the first Universal Negro Improvement Association which opens with 25,000 delegates in attendance, and Garvey begins to promote his "back to Africa" movement.

1990s: On October 16, 1995, Louis Farrakhan organizes the Million Man March in Washington, D.C. Hundreds of thousands of men gather on the Mall in a demonstration of unity, pride and brotherhood.

1920: Women's suffrage is proclaimed in effect August 26 following Tennessee's ratification of the nineteenth amendment.

1990s: In 1991 Anita Hill charges that Supreme Court nominee Clarence Thomas made indecent remarks to her eight years earlier while he served on the Equal Opportunity Commission. Sexual harassment in the workplace becomes a focus of national attention.

1920s: The National Woman's party meets in Seneca Falls, New York, in 1922 and endorses an Equal Rights Amendment drafted by founder Alice Paul.

1990s: Though the Equal Rights Amendment was never ratified, women such...