[11] Notable incidents of anti-abortion violence include the murders of a number of doctors and clinic staff in the 1990s: According to the FBI in June 2008, eco-terrorists and extreme animal rights activists represented "one of the most serious domestic terrorism threats in the US" at the time.
They had committed over 2,000 crimes and caused over $110 million in damages in the 28–29 years since 1979, against targets including lumber companies, animal testing facilities, and genetic research firms.
[16] In July 2020, the FBI began investigating the alleged attempted lynching of Vauhxx Booker, a Bloomington Indiana civil rights activist and local official.
The next most potentially dangerous group was "religious extremists", the majority "Salafi jihadists inspired by the Islamic State and al-Qaida", while the number planned by the far left had reduced to a minute fraction since the mid-2000s.
Human Rights Watch released a report in 1992 in which it claimed that the more extreme exiles have created a political environment in Miami where "moderation can be a dangerous position."
ALF is a loosely organized animal rights extremist movement practicing direct action against companies and individuals to cause economic loss and destroy its victim.
[30][31][32] In 2004, the deputy assistant director of the FBI testified before the Senate Judiciary Committee: "Individuals within the movement have discussed actively targeting food producers, biomedical researchers, and even law enforcement with physical harm.
But even more disturbing is the recent employment of improvised explosive devices against consumer product testing companies, accompanied by threats of more, larger bombings and even potential assassinations of researchers, corporate officers and employees.
"[30] Army of God (AOG)[33] is a loose network of individuals and groups connected by ideological affinity and the determination to use force to end abortion in the United States.
Acts of anti-abortion violence increased in the mid-1990s culminating in a series of bombings by Eric Robert Rudolph, whose targets included two abortion clinics, a gay and lesbian night club, and the 1996 Olympics in Atlanta.
Aryan Nations (AN) is a white nationalist neo-Nazi organization founded in the 1970s by Richard Girnt Butler as an arm of the Christian Identity group known as the Church of Jesus Christ–Christian.
The organization has been responsible for the deaths of eight people most notably the murder of Blaze Bernstein, a gay Jewish California student and the killings of Jeremy Himmelman and Andrew Oneschuk.
The Covenant, The Sword, and the Arm of the Lord (CSA) was a radical Christian Identity organization formed in 1971 in the small community of Elijah in southern Missouri, United States.
During the late 20th century, leading up to the Civil Rights Movement, various unrelated KKK groups used threats, violence, arson, and murder to further their anti-Black, anti-Catholic, anti-Communist, anti-immigrant, antisemitic, homophobic and white-supremacist agenda.
The group also carried out several bank and car robberies, three murders, and money counterfeiting until its leader, Robert Jay Mathews, was killed in a shootout with FBI agents on Whidbey Island, Washington, in December 1984.
The Hounds, a white vigilante group in San Francisco, attacked a Chilean mining community, raping women, burning houses, and lynching two men.
The attack, carried out on the ground and by air, destroyed more than 35 blocks of the district, did $30 million (2017 dollars) in damage, left 10,000 people homeless and up to 300 dead in a town considered the wealthiest black community in the nation.
On Sunday, September 15, 1963, members of the United Klans of America set a bomb consisting of a timing device and fifteen sticks of dynamite to explode at a historically black church in Birmingham, Alabama, that was a local focus of the Civil Rights struggle.
From 1978 to 1995, Harvard University graduate and former mathematics professor Theodore "Ted" Kaczynski – known by the codename "UNABOM" until his identification and arrest by the FBI – carried out a campaign of sending letter bombs to academics and various individuals particularly associated with modern technology.
In a 2004 congressional testimony, John S. Pistole, executive assistant director for counterterrorism and counterintelligence for the FBI, described the JDL as "a known violent extremist Jewish Organization.
Most recently, then-JDL chairman Irv Rubin was jailed while awaiting trial on charges of conspiracy in planning bomb attacks against the King Fahd Mosque in Culver City, California, and on the office of Arab-American congressman Darrell Issa.
On August 5, 2012, Wade Michael Page fatally shot six people (including himself) and wounded four others in a mass shooting at a Sikh temple in Oak Creek, Wisconsin.
Page was an American white supremacist and a United States Army veteran from Cudahy, Wisconsin, who was a member of the neo-Nazi skinhead Hammerskin Nation.
On April 15, 2013, two homemade bombs detonated 12 seconds and 210 yards apart at 2:49 p.m., near the finish line of the annual Boston Marathon, killing three people and injuring several hundred others, including 16 who lost limbs.
The two men targeted an exhibit featuring cartoon images of Muhammad taking place in the Curtis Culwell Conference Center in Garland, Texas.
Roof was known to be a white supremacist who admired the Confederate States, Rhodesia and apartheid South Africa, and owned a website with a manifesto both called The Last Rhodesian in which he outlined his views toward blacks, among other peoples.
Syed Rizwan Farook and Tashfeen Malik targeted a San Bernardino County Department of Public Health training event and holiday party of about 80 employees in a rented banquet room.
While practice for the annual Congressional Baseball Game for Charity was going on, James Thomas Hodgkinson opened fire on Republican Congressmen and Congresswomen on the field such as U.S. House Majority Whip Steve Scalise, U.S. Capitol Police Officer Crystal Giner, congressional aide Zack Barth and lobbyist Matt Mika, resulting in 6 injuries (4 critical) and the perpetrator's death.
On October 27, 2018, 11 people died and 6 more were injured at the Tree of Life - Or L'Simcha Congregation in Pittsburgh, Pennsylvania by Robert Bowers, a racial extremist.
On August 3, 2019, a domestic terrorist attack/mass shooting occurred at a Walmart store in El Paso, Texas, killing twenty-three people and injuring twenty-two others.