In April 2009, federal intelligence officials issued a prescient warning to police departments around the country.
Right-wing extremists will attempt to recruit and radicalize returning veterans in order to exploit their skills and knowledge derived from military training and combat, experts in the Department of Homeland Security wrote. These skills and knowledge have the potential to boost the capabilities of extremists including lone wolves or small terrorist cells to carry out violence.
It was one of DHS most explicit mentions of homegrown terrorists since 9/11, one with a direct connection to the military.
But the call to action was effectively buried after powerful Republican politicians and their allies in the right-wing media launched broadsides against President Barack Obamas administration and Democrats, alleging that they had disrespected the men and women in the U.S. military while attempting to surveil and silence conservatives. The blowback shifted the debate away from how to actually address the threat and into another partisan public spectacle.
https://eu.usatoday.com/story/news/investigations/2021/01/25/twelve-years-before-capitol-riot-warning-right-wing-extremism-buried/6658284002/
And it turned out the right-wing was the problem, of course - and not just the Jan 6th riot, invasion of Congress and coup attempt - but Trump's minions are trying to cover that up:
DOJ quietly removes study showing right wing attacks outpace those by left
The 2024 study, in which several criminal justice researchers reviewed National Institute of Justice data, found far more instances of deaths credited to right-wing groups.
The study was still available on the Justice Department website last week, but a researcher on extremism posted on social media that it had been removed in the days after the killing of right-wing activist Charlie Kirk.
...
Since 1990, far-right extremists have committed far more ideologically motivated homicides than far-left or radical Islamist extremists, including 227 events that took more than 520 lives, the study states.
In this same period, far-left extremists committed 42 ideologically motivated attacks that took 78 lives.
https://www.congress.gov/119/meeting/house/118612/documents/HHRG-119-JU00-20250917-SD057-U57.pdf
I believe far right Americans remain the biggest terror threat to the USA. But this DOJ will never admit it.