CRAWFORD — Shortly after Joan Baez arrived Sunday afternoon at Camp Casey II, she gave a press conference with the Gold Star Families, all of whom have lost loved ones in the war. She talked with them, and she cried with them. Ms. Baez returned to the trailer to prepare for her performance, speaking only in whispers when it was necessary to speak at all, saving her voice. She gave a moving performance, peppered with energy, emotion, humor, and humanity. She even showed compassion for President Bush, although she disagrees with him. She said she doesn’t make Bush jokes any...