Here you go:
"Anarchists and extremist socialist groups -- many of which, such as the Workers' World Party, Reclaim the Streets, and Carnival Against Capitalism -- have an international presence and, at times, also represent a potential threat in the United States. For example, anarchists, operating individually and in groups, caused much of the damage during the 1999 World Trade Organization ministerial meeting in Seattle."
http://www.fbi.gov/congress/congress01/freeh051001.htm
Seems they are more concerned about right wing terrorism and animal rights terrorists
"In recent years, the Animal Liberation Front (ALF) -- an extremist animal rights movement -- has become one of the most active extremist elements in the United States. Despite the destructive aspects of ALF's operations, its operational philosophy discourages acts that harm "any animal, human and nonhuman." Animal rights groups in the United States, including ALF, have generally adhered to this mandate. A distinct but related group, the Earth Liberation Front (ELF), claimed responsibility for the arson fires set at a Vail, Colorado, ski resort in October 1998 that destroyed eight separate structures and caused $12 million dollars in damages. In a communique issued after the fires, ELF claimed that the fires were in retaliation for the resort's planned expansion that would destroy the last remaining habitat in Colorado for the lynx. Eight of the terrorist incidents occurring in the United States during 1999 have been attributed to either ALF or ELF. Several additional acts committed during 2000 and 2001 are currently being reviewed for possible designation as terrorist incidents."
and
"Right-wing extremist groups. Fight-wing terrorist groups often adhere to the principles of racial supremacy and embrace antigovernment, antiregulatory beliefs. Generally, extremist right-wing groups engage in activity that is protected by constitutional guarantees of free speech and assembly. Law enforcement becomes involved when the volatile talk of these groups transgresses into unlawful action.
On the national level, formal right-wing hate groups, such as World Church of the Creator (WCOTC) and the Aryan Nations, represent a continuing terrorist threat. Although efforts have been made by some extremist groups to reduce openly racist rhetoric in order to appeal to a broader segment of the population and to focus increased attention on anti-government sentiment, racism-based hatred remains an integral component of these groups, core orientations.
Right-wing extremists continue to represent a serious terrorist threat. Two of the seven planned acts of terrorism prevented in 1999 were potentially large-scale, high-casualty attacks being planned by organized right-wing extremists. In December 1999, individuals associated with an anti-government group and who were planning to attack a large propane storage facility in Elk Grove, California, were arrested by the Sacramento Joint Terrorism Task Force. When arrested, these individuals were in possession of detonation cord, blasting caps, grenade hulls, weapons, and various chemicals, including ammonium nitrate. Also in 1999, the FBI interrupted plans by members of the Southeastern States Alliance -- an umbrella organization of militias in Florida, Georgia, South Carolina, Alabama, and other southern states - to steal weapons from national guard armories in Central Florida, attack power lines in several states, and ambush federal law enforcement officers. The goal of this group was to create social and political chaos, thereby forcing the U.S. Government to declare martial law, an act the group believed would lead to a violent overthrow of the Government by the American people."
Does this seem to comport with your understanding of the relative threats posed by groups of any stripe in this country?
Inquiring mind wants to know.
