Anti-slavery figures were individuals who actively opposed the practice of slavery and worked towards its abolition. They came from various backgrounds, including politicians, writers, and activists. Notable figures include Frederick Douglass, a former enslaved person who became a powerful orator and writer, and Harriet Tubman, who helped many enslaved people escape through the Underground Railroad. These advocates used speeches, writings, and organized movements to raise awareness about the injustices of slavery. Their efforts contributed to significant changes in laws and public opinion, ultimately leading to the abolition of slavery in many countries, including the United States with the passage of the 13th Amendment.