Abolitionism was the movement in opposition to slavery, often demanding immediate, unrewarded release of all slaves. This was generally considered constitutional, and there were only a few firm abolitionists prior to the Civil War. Almost all abolitionists advocated legal, but not social equality for blacks. Many abolitionists, such as William Lloyd Garrison were extremely vocal and helped to make slavery a national issue, creating sectional tension because most abolitionists were from the North.
William Lloyd Garrison was a radical who founded The Liberator, an abolitionist newspaper, in Boston in 1831. He advocated immediate, uncompensated emancipation and even civil equality for blacks. This made Garrison a famous and highly controversial