Susan B. Anthony gave a speech defending her right to vote after being arrested for casting an illegal vote in the 1872 presidential election. In the speech, she argues that the Constitution's preamble establishes that "we the people" formed the government, not just white males, and therefore women have a constitutional right to vote protected from state denial.
Lyndon B. Johnson gave a speech to Congress borrowing the civil rights phrase "we shall overcome" in reference to the voting rights struggle. The speech came after violence in Selma, Alabama against African Americans marching to protest laws preventing black voter registration through discriminatory literacy tests.