Manderlay

In 1933, after leaving Dogville, while traveling with her father and his gangsters to the south of USA, Grace Margaret Mulligan sees a slave ready to be punished in a property called Manderlay. The slavery had been abolished seventy years ago, and Grace becomes revolted with the attitude of the owners of Manderlay, keeping slaves in their cotton fields and following predetermined despicable rules called "Mam's Law". Grace decides to stay with some gangsters in Manderlay and give notions of democracy to the slaves and to the white family. When harvest time comes, Grace sees the social and economical reality of Manderlay.

Manderlay is the 2005 sequel to the film Dogville. It is the second part of Lars von Trier's projected USA - Land of Opportunities trilogy. Bryce Dallas Howard replaces Nicole Kidman in the role of Grace Mulligan. The film co-stars Willem Dafoe, replacing James Caan. Lauren Bacall and Chloë Sevigny return portraying different characters than those in Dogville.

Source: Wikipedia