Based on primary source documents, this historical study establishes the interconnections between private violence and political, social, and economic life in New York from 1930 to 1950. By describing and analyzing both the social world and social system of organized crime, Block provides a new perspective on racial and ethnic stereotypes in the study of organized crime. He also provides a penetrating look at one of the most misunderstood aspects of American society. East Side-West Side is an important book for historians, criminologists, and sociologists.