Savages" depending on their behavior.
How about “Victims of democratic Party Politics since 1828”?
Because the democrats started out as Andrew Jackson’s Trail of Tears and Slavery Party, led many Southern states on the road to war and ruin as the Rich Slavemaster’s Party, then brought about Jim Crow and became the KKK Party, and then metamorphosed into the Gibmedat and Racial Purity and Hatred Party of today.
Well, it's too polite, and not quite as descriptive.
The only thing "American" about them is their continental location, by accident of birth. And knowing their black-chauvinist style (Black Caucus, Black Panthers etc) I think they'd prefer some kind of skin color identifier.
At least "domestic" has the subliminal linkage to "domestic violence" Maybe "Domestic Black Ferals".