I saw this on the Aussie Conservative blog. Knowing the ethnic origin of suspects can help you get an idea of the person you’re trying to catch and punish fairly for the committed crime. It can also give you an idea of what types of people tend to commit different types of crime. It doesn’t necessarily mean that every person in a certain ethnic group will commit that crime, but it can give you insights into why they do so and how to address the issues that cause them to commit crimes.