FYI the Demographics of the city of Detroit is roughly 86% black, to put it in perspective, it's not out of the statistical norm of the city's population
Does not matter what percentage of the county is black, what matters is what percentage of the population is where the rapes occurred, these rapes weren't all happening in the Pointes, Northville, Livonia, etc.
The majority of these kits are from a period of time where the Demographics were over 80% black in the city.