And before you say: oh, they're different from us, remember that Sarajevo was a modern city that hosted the winter Olympics 8 years before brutal war broke out. Most of its citizens thought the idea of war happening was absolutely preposterous, until it wasn't.
Are you still so sure about the idea of internal civil strife being "unsubstantiated fear mongering"?
And by the way, race-based civil conflict is only a small part of the structural problems I'm worried about. There are multiple deeper, more dangerous threats on the horizon.
For example, are you sure that Trump will peacefully vacate the office if he loses the election? If not, what exactly do you think will happen then?
Finally, not that this matters a whole lot to me, but to provide you with "substantiation" that you may accept, many mainstream media outlets have covered this in detail in the past year or two. Here are just a couple, Google keywords such as "US civil war 2" (just "civil war" turns up Avengers stuff) and "boogaloo" for more mainstream media coverage:
https://www.washingtonpost.com/politics/in-america-talk-turn...
https://www.macleans.ca/society/america-is-deeply-divided-an...
I don't get out much but it doesn't seem likely to me that internal civil strife will actually break out in widespread violence. Who would fight whom, and to what end? A lot of us are mad at each other, sure, but we don't really want to shoot each other. South Park did a whole episode on it.
A military coup? Having worked in a 3-star general's headquarters for years......absolutely not.
I honestly haven't followed most of the domestic US insanity since COVID-19 descended on the world. I checked in with family members "Have you cleaned your firearms? Buy some more ammo. Do you still have MREs? Double your bottled water supply too." and then tuned out a bit after the news everyday was basically "more people die in NYC".
How about the WA state senator exposed as a member of a militia group which wants to overthrow the government? Or the protesters who hung an effigy of the KY governor in his front lawn last week? There are dozens of groups like this which want to kill. You are being willfully blind to it because you don’t want to believe it.