This is a real concern. I don’t know how it can be turned around, though. The momentum of polarization seems like it has reached critical velocity (or close to it).
They were never a threat. The military could have swooped in and killed everyone. "Democracy" is not that fragile, and cannot be destroyed by occupying a building. If democracy dies it will be because there are tens of MILLIONS of people don't want to participate anymore, at which point it's a civil war. A small minority of extremist cannot threaten a large system, unless of course those small minority is meant to be half of the country based on political leanings (at which point, it's not an insurrection and just a civil war).
By exaggerating the threat, it ironically adds fuel to the fire of a civil war, becoming like a self-fulfilling prophecy.