All lot of the language in this document explains why we've seen the government refer to many domestic activist organizations, no matter how peaceful, as terrorist organizations. By simply adopting the term terrorist to describe any group, the government can at least semantically defend the wiretapping of any individual. Want to wiretap someone? Simply find any single organization they belong to or have belonged too that can be labeled as "terrorist", no matter how tenuous any connection to actual terrorism there is.