I want to know the answer to the following question:
How do police identify someone as belonging to an ethnic group?
All the background I'm provided with is that "The other is categories used by the police when they visually identify someone as belonging to an ethnic group, e.g. at the time of a stop and search or an arrest: White – North European (IC1), White – South European (IC2), Black (IC3), Asian (IC4), Chinese, Japanese, or South East Asian (IC5), Middle Eastern (IC6), and Unknown (IC0).". Is that enough to answer the question?