History African Americans Race relations AIDS (Disease) Aeronautics African American legislators African American presidential candidates African American women legislators Constitutional history Gay liberation Gay liberation movement HIV infections HIV/AIDS Inventors LGBTQ+ social processes Lesbian liberation Presidential candidates Racism Reconstruction (U.S. history, 1865-1877) Riots STDs Seashore Shark attacks Social aspects Tulsa Race Massacre, Tulsa, Okla., 1921 Vietnam War, 1961-1975 Watergate Affair, 1972-1974 Women authors Women legislators Women pioneers