A bit late but I just finished watching Matthew McConaughey's latest The Free State of Jones, essentially about the early days of civil rights in Mississippi.
McConaughey is Newt Knight who doesn't get why white Southerners are exempt from military service if they own 20 slaves, so he deserts the Confederate Army and returns to Jones County, where a Confederate company is extorting, stealing whatever 90% of produce from farms, ostensibly for their soldiers. He and a group of other whites and slaves head for the swamps where they fight a guerrilla war, and later for the Union, against the local army.
The war finishes, Reconstruction starts and soon enough, the Ku Klux Klan are lynching blacks.
There's a parallel story where a male descendant is charged with marrying a white woman, while his female ancestor was black, and miscegenation was a crime in Mississippi in the 1960's.
The funny thing is that Knight and his friends, mostly black, are voting for the Republicans. 23 of them voted but the official count was 419 to 2.
I think you could say Lincoln's Republicans were a little different from today's shower.
There's the odd dramatic invention but mostly true. Website is freestateofjones.info