Had a drink with a friend after my patents exam today. There was a van with a loudspeaker outside.
The goal of the van and loudspeaker were to remind everyone that a murder had taken place there the weekend before, and that if they had any tips, they should call the police.
I almost want to give the cops credit for this method of detective work, except for the little detail that the crowd at this bar is a little different at 5pm on a Wednesday that it is at 2am on a Saturday, which is when the shooting occurred. Oops.