A century of murder rates is surveyed from Buffalo, New York, within the context of several demographic variables. Over the course of the twentieth century, Buffalo's murder rates have trended upward. It is argued that the dynamics of the twentieth century in Buffalo may be repeated across various cities in the twenty-first century via analogous demographics. Accordingly, increasing rates of violent crime in general, and most specifically of murder, would be under pressure to remain at the relatively high levels. Key Words: Murder rate, Buffalo, ethnic homogeneity, immigration, high school graduation rates, non-marital births, violent crime rates, unemployment. Demography is destiny. Auguste Comte Although murder in the United States is relatively rare and each case has unique properties, some patterns tend to be consistent Murder is mainly a male event (as to both perpetrator and victim) with males over-represented in the arrests. This article focuses upon the level of documented murder in Buffalo, New York. Demographic variables, over and beyond young males, will be examined in relationship to any trends, upward or downward, in the murder rates. Following the results section, the attempt will be made to augur whether Buffalo, New York, can be reasonably generalized to other similar cities in the U.S. If generalizability is justifiable, then the question emerges of whether the generalization most usefully applies to twentieth century America as a snap-shot of the past or, radier, to twenty-first century America as a prediction of the future. Backdrop of the Analysis The Township of Buffalo, New York, was established in 1810, and incorporated as a city in Erie County in 1832. Buffalo soon became important commercially both as a place for the transit of goods and as a center for manufacturing goods. In the late nineteenth and early twentieth centuries, Buffalo was a magnet for immigration from Europe, and a significant wave of European immigration occurred. The percentage of Buffalo's foreign-born Whites, i.e. Europeans, peaked at 30% in 1900 and slowly declined until the Great Depression. See Table 1. As the Great Depression began and continued, the level of immigration from Europe declined steeply. World War II created a market for labor, and a second wave of immigration into Buffalo occurred. This wave contained a fairly large number of southern Blacks. In the 1980s a third wave began, consisting mainly of individuals from Mexico and Central America. See Table 1 for percentages of ethnic group by decade. It should be noted that various entities, including governmental agencies, across various years refer to this latter group with various names, e.g. Latinos, Hispanics, Chicanos, Spanish. This article will use the term Latinos and notes that the majority of the recendy immigrating Latinos originated from Mexico or Central America. Method Variables: Dependent variable: Buffalo's rate of murders (per 100,000 population) as known to the police will be the dependent variable. The Buffalo murder rates were available from the 18902003 (Buffalo Police Department 1905-1935, U.S. Department of Justice 1931-2005. To avoid an aberrant year, the mean murder rate of three years is the datum of record. The census year, plus and minus one year, developed the three-year mean. Independent variables: To complement the stipulated variables of young males, years (with decade as the unit) and levels of ethnic homogeneity are the first, if coarse-grained, set of independent variables. Although diere are variations upon the theme, the initial coding for ethnicity will be White, Black and Latino. The hypodiesis being tested is that Buffalo's murder rates will vary predictably widi changes over time and changes in edinic homogeneity.Percentages of the relevant etiinic groups in Buffalo were available from the U.S. Census (1890 - 2002). Level of ethnic homogeneity: The U. …