We have a giant monument in Washington DC to the man who opened wide the doors through which every progressive since has walked. None other than "Honest" Abe Lincoln. He trampled on the Constitution and before it was over we no longer had the republic our founders had given us.
The despot's heel is on the shore
Maryland, my Maryland
His torches at thy temple door
Maryland, my Maryland
Avenge the patriotic gore
That flecked the streets of Baltimore*
And be the battle queen of yore
Maryland, my Maryland(First verse of the State Song, written in 1861 by James Ryder Randall)
*Refers to the Pratt Street Riots, the first KIAs of the War, when the Armies of Massachusetts and Pennsylvania invaded the State. Needless to say, no Federal intervention to stop the invasion was forthcoming.
Not to re-fight the war, but prior to it, the invasion of one sovereign State by another was strictly forbidden, and one of the reasons to have a Federal Army, to prevent such.
The war was a turning point, when we ceased to be a Federal Republic, and much of the Constitution was discarded by those who would impose their will on the rest by force, through the invasion, occupation, and destruction of their homes.