Easy, if you know the code:
1. A description without hair color
2. A description without skin color (e.g. "white", "Hispanic", "Asian")
3. Lots of detailed descriptions such as what he was wearing, how tall he was, and what he was driving - but none, zero, nada, mention of skin color
4. Very often the brutal crime seems totally senseless but is against a pretty white girl or a nice white couple and there is vicious torture and rape involved
See? It's easy to know when Political Correctness is taking part in the investigation. You can spot it a mile away after all these years.