David Walker (1796-1830), the son of an enslaved man and a free black woman, was an entrepreneur, abolitionist, author and anti-slavery activist. In 1829, he published An Appeal to the Coloured Citizens of the World, a radical call for black solidarity and resistance to slavery.

It raised awareness of the abuses of slavery, encouraged pride in its black readers and offered hope that change would eventually come. Being a radical anti-slavery document, it caused a stir upon publication, as it called upon readers to take an active role in fighting their oppression, regardless of the risk. Walker also criticized the American Colonization Society, which sought to deport all free and freed blacks from the United States to a colony in Africa.