Denmark Vesey was an African American slave brought to the United States from the Caribbean of Coromantee background. After purchasing his freedom, he planned what would have been one of the largest slave rebellions in the United States. Word of the plans was leaked, and at Charleston, South Carolina, authorities arrested the plot's leaders before the uprising could begin. Vesey and others were tried, convicted and executed. Many antislavery activists came to regard Vesey as a hero. During the American Civil War, abolitionist Frederick Douglass used Vesey's name as a battle cry to rally African-American regiments, especially the 54th Massachusetts Volunteer Infantry.