[Cobra64]

Further proof people are stupid. If you’re a criminal, after shooting a semi-auto, just pick up your brass.

If a cop is shooting a semi at the public range near you, pick up HIS brass and later spread it around the crime scene. Forensics finds the cops brass. The cop gets arrested.

[17th Miss Regt]

Or...

Does the DA like to shoot? Take some of his brass from the firing range...