Peter N. Stearns 
American Fear [PDF ebook] 
The Causes and Consequences of High Anxiety

Americans have become excessively fearful, and manipulation through fear has become a significant problem in American society, with real impact on policy. By using data from 9/11, this book makes a distinctive contribution to the exploration of recent fear, but also by developing a historical perspective, the book shows how and why distinctive American fears have emerged over the past several decades.