One hundred years ago today, Woodrow Wilson brought Jim Crow to the North. He had been inaugurated on March 4, 1913. At a cabinet meeting on April 11, his postmaster general, Albert S. Burleson, suggested that the new administration segregate the railway mail service; and treasury secretary William G. McAdoo, who would soon become Wilson’s son-in-law, chimed in to signal his support. Wilson followed their lead. He had made a bid for the African-American vote in 1912, and he had attracted the support of figures such as W. E. B. Du Bois, but, as he put it at the meeting,...