In those few days, a president of Irish descent went abroad to Germany while a preacher of African descent went inland to Detroit, both to stir the divided core of American identity. The proconsul defended the empire of freedom while the prophet proclaimed its soul. They inspired millions of the same people while acknowledging no fundamental differences in public. Together, they traced a sharp line of history. Where their interpretations of freedom overlapped, they inspired the clear hope of the decade. Where incompatible, they produced conflict as gaping as the Vietnam War.