The angry faces at Tea Party rallies are eerily familiar. They resemble faces of protesters lining the street at the University of Alabama in 1956 as Autherine Lucy, the school's first black student, bravely tried to walk to class. Those same jeering faces could be seen gathered around the Arkansas National Guard troopers who blocked nine black children from entering Little Rock's Central High School in 1957. "They moved closer and closer," recalled Elizabeth Eckford, one of the Little Rock Nine. "Somebody started yelling, 'Lynch her! Lynch her!' I tried to see a friendly face somewhere in the crowd --...