Yeah, I'm sure that most criminals look for someone carrying a gun or knife or club as their first choice for a vicitm.
Rice is right that open carry is not a bright idea for anyone except on-duty LE, military, or security personnel. The casual open carrier is an invitation to gun theft. If your primary purpose in going somewhere is other than to provide armed security or law enforcement, then your mind is going to primarily on things other than security. As Pelletier's case illustrates, there's little difference between casual open carrying and forgot-I-was-carrying. Pelletier had been carrying concealed, and then took off his coat, and went into a store not aware that his gun was on display. If you're unaware (even momentarily, as you turn your attention to merchandise or a menu, etc.) that your gun is on display, and all the random people around you ARE aware that your gun is on display, you're asking for trouble. At least if you have it in the front of your person, you're going to notice if someone reaches for it, but open carry behind your back is just insane.