Urban homicide arrest counts and rates by gender and race showed additional divergence and underscored the impact of black men on urban arrest trends. Homicide arrest rates for young men in urban areas were very high, frequently reaching 200 to 300 per 100,000 for some categories of young men. Homicide arrest rates fluctuated over time. For some cities, these rates may have decreased slightly between 1980 and 1993. Because male arrest trends were greatly influenced by changes in black male arrest trends, the author believes estimates of the impact of possible changes in race- and gender-specific arrest rates support the view that substantial reductions in long-term violence rates in U.S. cities will require substantial reductions in black and Hispanic homicide rates. 4 figures