Born into slavery in Virginia in the late 1700s, Dred Scott had little to look forward to in life. But he was fortunate in two ways: His first owner was fairly kind to him, and he grew up with his owner's children, forming friendships that he would come to depend on years later. For on April 6, 1846, Dred Scott and his wife, Harriett -- their ownership having changed hands several times during adulthood -- took the dangerous and courageous step to...