I saw this last night:

Free State Of Jones.jpg

A fascinating but brutal story of Confederate deserters, runaway slaves and poor white farmers creating their own state in part of Mississippi towards the end of the civil war in opposition to the Confederacy. It is based on a true story, and the DVD documentary extras tell it brilliantly. The end of the civil war was just the start of their fight against the KKK and racist state laws. Well worth watching - though I don't know how it got away with a 15 cert.