"...It is said that the panic grew out of the fears aroused by the ferment in the Southern States. Although at New Orleans all is quiet, and everybody seeks peace, throughout the states of Alabama, Mississippi, South Carolina and Georgia, great excitement prevails; and if any reliance can be placed upon the assertions of the politicians and the newspapers of those states, the election of Lincoln will not be tolerated without a struggle. What that form of struggle may take remains to be seen...But in the meantime there can be no question but, pending the discussion, uneasiness will pervade the country and all the markets will be feverish."
Wall Street went south on the first day of the Korean War, too - click here to read about it.