Perhaps the most reviled figure in American history is Senator Joseph McCarthy. "McCarthyism" has become the term of choice for false, destructive accusations. Yet a new book shows that Senator McCarthy was right in his allegations. Blacklisted By History: The Untold Story of Senator Joseph McCarthy and His Fight Against America's Enemies by M. Stanton Evans, chairman of the Education and Research Institute, shows that McCarthy was right about there being significant communist infiltration in government, his investigative methods were careful, thorough and of the highest standard, and his adversaries were the ones who practiced so-called "McCarthyism." It is McCarthy,...