ITHACA, N.Y., Sept 14 - On the verge of America's invasion of Iraq, four left-wing activists went into the vestibule of their suburban Army recruiting center and poured vials of their blood, about four ounces each, onto the walls, windows and American flag. They wanted the fresh recruits, the ones they believed had been seduced by video games and government lies, to see the blood and think about those destined to shed it: the Iraqi people and American soldiers. They refused to leave and prayed while they waited to be arrested. Jesus of Nazareth inspired them, they said, as did...