Keystone State Skinheads (KSS or Keystone United) is a White nationalist group based in Pennsylvania. According to the KSS website, the group had chapters in Harrisburg, Philadelphia, Pittsburgh, Erie, Scranton, Reading, Carlisle, Allentown and other cities in the state. KSS was featured in the National Geographic Channel documentary American Skinheads. The Southern Poverty Law Center stated that the group was one of the most active white nationalist organizations in the United States. In 2008, KSS changed its name to Keystone United. The number of its members remains unknown. The group's logos are a pit bull or a bulldog bordered by a chain or a keystone symbol.