Umm a large crowd descended on the Capitol and people died as a result. There exist militia groups which saw this. The threat is credible and real. You are delusional to think otherwise. The US probably needs to mass arrest those people or break up their movements like they did other nationalist groups like the Black Panthers, who had similar agendas. And pass gun control laws to keep them from having arms with which they would threaten the government.
It seems like there were no guns brought to the Capitol by the rioters, contrary to initial reporting. So to expand the paranoia to those who were calmly hanging out at home with a shotgun in the closet is just a bit extreme.