AN interesting obituary appeared in The New York Times recently, though the death of its subject last month was largely unnoticed beyond his family and friends. That’s not surprising. Delmer Berg wasn’t a celebrity. He wasn’t someone with great wealth or influence. He had never held public office. He was a Californian. He worked as a farmhand and stonemason. He did some union organizing. He was vice president of his local N.A.A.C.P. chapter. He protested against the Vietnam War and nuclear weapons. He joined the United States Communist Party in 1943, and, according to The Times, he remained an “unreconstructed...