The incident filled the South with consternation. The prompt condemnation of it by many Republican leaders did not offset, in the minds of Southerners, the fury of praise accorded by others. The South had a ghastly tradition derived chiefly from what is known as Nat Turner's Rebellion in Virginia, a tradition of the massacre of white women and children by negroes. As Brown had set opt to rouse a slave rebellion, every Southerner familiar with his own traditions shuddered, identifying in imagination John Brown and Nat Turner. Horror became rage when the Southerners heard of enthusiastic applause in Boston and of Emerson's description of Brown as "that new saint" who was to "make the gallows glorious like the cross." In the excitement produced by remarks such as this, justice was not done to Lincoln's censure. In his speech at Cooper Institute in New York, in February, 1860, Lincoln had said: "John Brown's effort...in its philosophy corresponds with the many attempts related in history at the assassination of kings and emperors. An enthusiast broods over the oppression of a people, until he fancies himself commissioned by Heaven to liberate them. He ventures the attempt which ends in little else than in his own execution." A few months afterwards, the Republican national convention condemned the act of Brown as "among the gravest of crimes."