At the most basic level, this work is a study of communication—how Roman speakers communicated with their audiences, and how audiences in turn were able to reply and convey their reactions to the speakers. Aldrete begins by investigating how orators employed an extraordinarily sophisticated system of hand and body gestures in order to enhance the persuasive power of their speeches. He then turns to the target of these orations—the audience—and examines how they responded through the mechanism of acclamations, that is, rhythmically shouted comments. Aldrete finds much in these ancient spectacles that is relevant to modern questions of political propaganda, manipulation of public image, crowd behavior, and speechmaking. Readers with an interest in rhetoric, urban culture, or communications in any period will find the book informative, as will those working in art history, archaeology, history, and philology.