The Romulan Republic wrote:Define "political importance".
Dominating the discourse of an entire party and a significant portion of the population on the issue contrary to prior trends and historical views within said society.
A very partial list of prominent examples of Right wing/anti-government terrorism and violence over the last two-plus decades would include:
The two Bundy stand-offs.
The Oklahoma City bombing (considered the worst incident of terrorism in American history pre-911).
The South Carolina Black church shooting about a year ago.
The Colorado abortion clinic shooting.
I'll accept those. That's not much for the course of two decades in a nation of some 315 million people.
The various recorded acts of violence at Trump events by Trump supporters.
Minor, as much as I hate to admit it; about as concerning as a bar fight.
I could dig up more, of course, but that's just to start with. All of these are well-known, though I can provide sources if you wish (I'm just in a bit of a hurry right now).
Are any of these kinds of things going to topple the government or result in a genocide? No. Are they destructive to the individuals caught up in them? Hell yes.
Jesus, you could say that about so many things. It's not even worth saying.