> As of 2021, the United States government considers white supremacists to be the top domestic terrorism threat.
https://en.m.wikipedia.org/wiki/Domestic_terrorism_in_the_Un...
https://en.m.wikipedia.org/wiki/Domestic_terrorism_in_the_Un...
I would note; I know of at least one missing item, the attack on protesters in Denver. I also added back in the 2009 Fort Hood shooting which was linked to the page but also missing in the list.
Also possibly missing: DC Sniper attacks
However for sake of argument, I will only look at data prior to 2021:
8/16 attacks on that list are linked to White Supremacists(Counting OKC) ~50%
In the last 15 years, again about 50% are linked to White Supremacists and ~41% linked to Radical Islam.
That said, the next challenge is to agree on what constitutes the left-right political spectrum in the US. I would argue it’s too vague to exist. It’s important to realize when a data point is describing gun violence or any source of violence, and whether it is violence against civilians or violence against the government as well.