This is a collection of conference papers which focus upon factors and variables in conflict among urban ethnic groups in American cities and abroad. Included are the following articles: (1) "Ethnic Conflict, Community-Building, and the Emergence of Ethnic Political Traditions in the United States," by Peter K. Eisinger; (2) "Assimilation and the Moderation of Linguistic Conflict in Brussels," by Jeffrey Obler; (3) "Belfast: The Urban Encapsulation of a National Conflict," by Frederick W. Boal, Russell C. Murray, and Michael A. Poole; (4) "Racial Conflict in the City: The Experience of Birmingham, England from 1962 to 1975," by John Rex; (5) "Urban Ethnic Conflict in Britain and Canada: A Comparative Perspective," by Anthony H. Richmond; and (6) "Urban Ethnic Conflict: Selected Theoretical Approaches," by Susan E. Clark. References are provided with each article. (GC)