>Criminal profilers might qualify as experts in court, saying someone "fits the profile", helping the state make a case, while their profiling could be totally wrong, as it was in the famous sniper case, where they went with the classic "middle aged caucasian" and the killer was black and with his son(?) as an accomplice.

What case is this? Also, is "middle ages caucasian" some kind of trope in police investigations? I wasn't aware it was…