What is Voodoo?

Article from the Huffington Post.

Racism clouds our view of Voodoo. It is rooted in slavery and intricately connected to this hemisphere's political and social evolution. Voodoo was first practiced in America and the Caribbean by slaves of African descent, whose culture was both feared and ridiculed. Slaves were not considered fully human. Their religion was dismissed as superstition, their priests were denigrated as witchdoctors, their Gods and Spirits were denounced as evil.