Final answer:
Frederick Douglass spoke against slavery, highlighting its impact on families and shifted abolitionist strategies from reform to resistance and direct aid to runaway slaves.
Step-by-step explanation:
Frederick Douglass, an influential abolitionist and orator, spoke out passionately against the evils of slavery. He highlighted the destruction of both Black and White families by the institution of slavery and pushed public opinion towards the abolitionist agenda. His role was crucial in the shift from moral suasion to resistance and in supporting runaway slaves, both domestically and through international antislavery networks. He also criticized those, like President Andrew Johnson, who failed to fully embrace the rights of Black citizens even after the abolition of slavery.