The authors of Danger on the Right (1964) continue their coverage of right-wing movements with this updated and expanded revision of their Report on the John Birch Society 1966. Unlike Danger, a broad-based inventory, this concentrates on the sociological and political aspects of the role of the John Birch Society as the mother church of reactionary extremism. Another marked difference is the decreased attention paid to the civil rights movement as the propellant of animus, with the Vietnam war taking over as the root issue. This can't be called detached, but it is documented in detail and written in succinct journalese--an important subject in a popular presentation.