They are heating up. Can't deny that
I wouldn't agree with the figures. This is what I found:
View attachment 65495
It would appear that the #1 is "unknown - nobody in particular did it"
Following that, Secular/political/anarchist. (Left or Right - doesn't say on "political" But apparently secular people are more on the "uh oh" list.
This is what I'm finding.
https://www.congress.gov/116/bills/s894/BILLS-116s894is.xml
""(1) White supremacists and other far-right-wing extremists are the most significant domestic terrorism threat facing the United States.
(2) On February 22, 2019, a Trump Administration United States Department of Justice official wrote in a New York Times op-ed that “white supremacy and far-right extremism are among the greatest domestic-security threats facing the United States. Regrettably, over the past 25 years, law enforcement, at both the Federal and State levels, has been slow to respond. … Killings committed by individuals and groups associated with far-right extremist groups have risen significantly.”.
(3) An April 2017 Government Accountability Office report on the significant, lethal threat posed by domestic violent extremists explained that “since September 12, 2001, the number of fatalities caused by domestic violent extremists has ranged from 1 to 49 in a given year.” The report noted: “[F]atalities resulting from attacks by far right wing violent extremists have exceeded those caused by radical Islamist violent extremists in 10 of the 15 years, and were the same in 3 of the years since September 12, 2001. Of the 85 violent extremist incidents that resulted in death since September 12, 2001, far right wing violent extremist groups were responsible for 62 (73 percent) while radical Islamist violent extremists were responsible for 23 (27 percent).”.""
Edit. There is also this:
The Escalating Terrorism Problem in the United States
"ATTACKS AND PLOTS
Between 1994 and 2020, there were 893 terrorist attacks and plots in the United States. Overall, right-wing terrorists perpetrated the majority—57 percent—of all attacks and plots during this period, compared to 25 percent committed by left-wing terrorists, 15 percent by religious terrorists, 3 percent by ethnonationalists, and 0.7 percent by terrorists with other motives."