The garrisonian abolitionist movement was a radical faction within the larger abolitionist movement led by William Lloyd Garrison, advocating for the immediate emancipation of enslaved people and equal rights for African Americans. Garrison's approach was characterized by moral persuasion, nonviolence, and a call for the dissolution of the Union if it maintained slavery. This movement played a crucial role in mobilizing public opinion against slavery and fostering free black communities focused on activism and education.