Susan Braudy is the author of “Family Circle: The Boudins and the Aristocracy of the Left.” The book tells the story of Kathy Boudin, daughter of famous lefty lawyer Leonard Boudin. Kathy got involved with the anti-way extremist group The Weathermen and ultimately spent 22 years in prison for her part in a robbery which resulted in the deaths of a Brinks guard and two policemen. Braudy says Kathy was motivated by rivalry with her father.