Manderlay (2006)

The second film in Lars von Trier's trilogy, "Manderlay" is shot in the same distinctive style as "Dogville". Set in 1933, "Manderlay" continues the story immediately after Grace and her father leave Dogville. Wandering through Alabama, they discover a gated community where the mostly black inhabitants still live under the tenets of slavery. Grace cannot help but intercede when she witnesses a slave being brutally whipped by a white master. The fearsome plantation owner and matriarch, Mam, dies soon after, prompting Grace to assist the downtrodden inhabitants in their transition to democracy.

Official website: http://www.manderlaythefilm.com/