Probably the attackers and victims are both white. Maybe Asian.
From Wiki. (I’m surprised at the asian population)
>>As of the census[1] of 2000, there were 8,034 people, 3,148 households, and 2,134 families residing in the city. The population density was 1,736.3 per square mile (670.0/km²). There were 3,213 housing units at an average density of 694.4/sq mi (267.9/km²). The racial makeup of the city was 95.69% White, 0.56% African American, 0.32% Native American, 1.94% Asian, 0.05% Pacific Islander, 0.32% from other races, and 1.11% from two or more races. Hispanic or Latino of any race were 1.73% of the population.<<