Let's say that one of the 'dead kids' was a DEA informant. A local wannabe drug kingpin shoots the kid to death.
Drug guy is arrested and goes to trial. His defense counsel argues that the dead kid was already dead *before* his client shot him.
To support his claim, he produces a room full of witnesses that testify that the police had told them that the kid was already dead at the time he is alleged to have been shot.
Hmmm...