The KKK wants to adopt a roadside sign, but their request was denied by the Georgia Department of Transportation because of the organization’s history of violence.
The ACLU claims the sign is a form of free speech.
"The point is the government may not choose what is and is not acceptable," Debbie Seagraves, Executive Director, ACLU of Georgia, said.
"It's called viewpoint discrimination. It's not relevant whether or not we agree or disagree with the viewpoint that being expressed. What we agree with is the constitutional protection of free speech. And the ACLU has always stood for that and the ACLU will always stand for that."
Local leaders in Georgia have said in the past that a sign sponsored by the KKK is not how they want to represent the area.