http://www.kmov.com/story/36405318/whites-only-stickers-found-on-the-doors-of-restaurants-in-the-grove
Once again, look no further than the FBI definition of terrorism...
The FBI looks to the Code of Federal Regulations definition: "The unlawful use of force and violence against persons or property to intimidate or coerce a government, the civilian population, or any segment thereof, in furtherance of political or social objectives."