From its origins in the 1750s, the white-led American abolitionist movement adhered to principles of «moral suasion» and nonviolent resistance as both religious tenet and political strategy. But by the 1850s, the population of enslaved Americans had increased exponentially, and such legislative efforts as the Fugitive Slave Act and the Supreme Court's 1857 ruling in the Dred Scott case effectively voided any rights black Americans held as enslaved or free people. As conditions deteriorated...
