Sure, if the system works.
Thing is, systems don't always work:
Date Place Dead Legal status
26 Apr 2002 Erfurt, Germany 16 + 1 Legal guns, pistol club member
27 Sep 2001 Zug, Switzerland 14 + 1 Legal guns, licensed pistol owner
29 Jul 1999 Atlanta, GA, USA 12 + 1 Legal guns, no licence...