Given the context of these types of threats - http://www.breitbart.com/texas/2015/...ople-and-cops/ - These "movements" are calling for murders and lynching of whites and police officers.
The fact that Deputy Goforth was assassinated shortly after this trash was posted online for what appears to be just wearing the uniform - http://www.nbcnews.com/news/us-news/...he-was-n418526 (video in link auto plays)
ter·ror·ist
a person who uses terrorism in the pursuit of political aims.
The U.S. Code of Federal Regulations defines terrorism as "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"