Amitai Etzioni 
Demonstration Democracy [PDF ebook] 

This book, first published in 1970, examines the thesis that demonstrations are becoming an integral an integral part of the democratic way of life. It analyses the conditions under which some demonstrations become violent and explores ways in which the incidence of such violence can be greatly reduced. It discusses the necessity for governmental responsiveness to legitimate, articulated needs; and looks at the degree of responsiveness required if demonstrations are to remain peaceful.