Murder is a crime of course, but even I got the gist of what this wrench was saying.
What he meant was the murder was personal....and thus not statistically a risk to you passing through the area. Random acts of violence or armed robberies in the area should worry you. One thug killing another over a personal dispute should not place you in much danger.
Unless you witness it. In which case you win in the contest for most interesting commute. :-)