A little “guerilla stickering” might be called for.
On the window under/over the no guns sign,
post a sticker that says “Notice to Criminals - Unarmed Victim Zone”.
Vandalism won’t help the cause.
Armed citizen truncates crazed man’s mass attack
January 15, 2014
Once again, we see that the only thing that stops a bad person with evil in their heart is a good guy with a gun.
In Portland, a disgruntled man with no shortage of previous arrests thought he was going to “show them” after getting turned away from admission for being an obnoxious jerk. He returned wearing a Halloween mask and carrying a gun and opened fire.
http://www.gunssavelife.com/?p=10503