Along Harlem's 125th Street, the main artery of what was once the heart and soul of black America, a group of embittered black protesters demonstrates against the string of tidy Korean shops that now almost dominate the thoroughfare. In Miami, native blacks are beginning to feel like spurned foreigners as ambitious Cubans give the city a Latin rhythm and take over what were once bastions of black business. On the grim concrete playgrounds of Powelton Village in West Philadelphia, black children call their Asian classmates "chinks" and "gooks." The Asians, quick learners all, call the blacks "spooks" and "niggers."
Ever since...