Your concluding sentence represents the beginning of a movement among law-abiding Americans to settle the dispute in a peaceful, systematic way:

"Since Republicans are threatening a civil war in defense of Trump’s candidacy, I guess it’s appropriate for opponents of Trump to invoke a Civil War era ban to challenge Trump’s candidacy."

Opponents of donald trump (which would include me) are using our rule of law to properly bring the chief insurrectionist to the bar of Justice. Our Justice system, born in bloodshed and revolutionary war, later secured in the bloodshed of Civil War, is designed to establish a system of replacing brawn and bullets with Law and Love of our Republic and its people.

Let us hope and pray that our imposition of Justice on the trump insurrectionists will ultimately prevent war and bloodshed, not start one.