As you know, the FBI divides the terrorist threat facing the United States into two broad categories, international and domestic. During the past decade we have witnessed dramatic changes in the nature of the domestic terrorist threat. In the 1990s, right-wing extremism overtook left-wing terrorism as the most dangerous domestic terrorist threat to the United States. During the past several years, however, special interest extremism, as characterized by the Animal Liberation Front (ALF), the Earth Liberation Front (ELF), and related extremists, has emerged as a serious domestic terrorist threat. Special interest terrorism differs from traditional right-wing and left-wing terrorism in that extremist special interest groups seek to resolve specific issues, rather than effect widespread political change.