It would be funny if it wasn't so serious. Police officers responded to a scene where shooting had been reported. They asked a guy if he had a gun. He said no, the officers asked him to "hike his pants." The guy had a .40 calibre pistol that had been stolen from an FBI agent's car two months earlier. The lower court threw out the guy's conviction on the grounds that he should have been able to walk away from the cops, but didn't because he is black and had reason to be afraid - he felt "compelled." So even though he cooperated with the cops and the gun was found - no can prosecute. The cops did their job, found a stolen pistol, probably prevented some future crime - but SCOTUS basically sides with the thief.