Photo by dizfunkshinal Tuesday's Metro Police shooting was not just unusual in that it was the first fatal shooting in the agency's history, but in that a bystander was injured as well. While we wait for more details to emerge from HPD, which is leading the investigation, Hair Balls checked in with a criminology expert about the incidence of bystander shootings."It's just a rare phenomenon," says David Klinger, a professor of criminology at the University of Missouri-St. Louis. "...Police