Jackson, who is a well-known civil rights leader, ran for the Democratic nomination in 1984 and then again in 1988. Neither Jackson nor Chisholm succeeded in securing the party nod, but speakers ...

Shirley Chisholm (Rep. N.Y.), left, announcing her candidacy for the presidency in Brooklyn on Jan. 25, 1972. Vice President Kamala Harris, right, at a campaign rally in Las Vegas on Aug. 10.

There are so many parallels today—a new wave of civil rights (Black Lives Matters) and women's rights (#MeToo) movements, domestic conflict over foreign wars, and a disaffected Gen Z.