were anti-abolitionist riots in several cities. In the South abolitionism was illegal, and abolitionist publications, like The Liberator, could not be sent to Southern post offices. Amos Dresser, a white alumnus of Lane Theological Seminary, was publicly whipped in Nashville, Tennessee, for possessing abolitionist publications. Abolitionism in the United States became a popular expression of moralism, operating in tandem with other social reform efforts, such as the temperance movement, and much more problematically, the women's suffrage movement. The white abolitionist movement in the North was led by social reformers, especially William Lloyd Garrison (founder of the American Anti-Slavery Society) and writers Wendell Phillips, John Greenleaf Whittier, and Harriet Beecher Stowe. Black activists included former slaves such as Frederick Douglass; and free blacks such as the brothers Charles Henry Langston and John Mercer Langston, who helped found the Ohio Anti-Slavery Society. Some abolitionists said that slavery was criminal and a sin; they also criticized slave owners of using black women as concubines and taking sexual advantage of them. The Republican Party wanted to achieve the gradual extinction of slavery by market forces, because its members believed that free labour was superior to slave labour. White southern leaders said that the Republican policy of blocking the expansion of slavery into the West made them second-class citizens, and they also said it challenged their autonomy. With the 1860 presidential victory of Abraham Lincoln, seven Deep South states whose economy was based on cotton and the labour of enslaved people decided to secede and form a new nation. The American Civil War broke out in April 1861 with the firing on Fort Sumter in South Carolina. When Lincoln called for troops to suppress the rebellion, four more slave states seceded. Meanwhile, four slave states (Maryland, Missouri, Delaware, and Kentucky) chose to remain in the Union. Civil War and final emancipation On 16 April 1862, Abraham Lincoln signed the District of Columbia Compensated Emancipation Act, abolishing slavery in Washington D. C. Meanwhile, the Union suddenly found itself dealing with a steady stream of escaped slaves from the South rushing to Union lines. In response, Congress passed the Confiscation Acts, which essentially declared escaped slaves from the South to be confiscated war property, called contrabands, so that they would not be returned to their masters in the Confederacy. Although the initial act did not mention emancipation, the second Confiscation Act, passed on 17 July 1862, stated