Oh, no ... it's a true story. The rest of the story is that Marylanders were raising unicorns and making rainbows, and the twisted Lincoln couldn't abide it.
I see. And who said you don't learn something new every day?
Snarky remarks don’t make it any less true.
From Wikipedia:
http://en.wikipedia.org/wiki/American_Civil_War#Border_states
Maryland had numerous pro-Confederate officials who tolerated anti-Union rioting in Baltimore and the burning of bridges. Lincoln responded with martial law and called for troops. Militia units that had been drilling in the North rushed toward Washington, DC and Baltimore.[65] Before the Confederate government realized what was happening, Lincoln had seized firm control of Maryland and the District of Columbia, by arresting all the Maryland government members and holding them without trial.