Read an article a few years back, maybe by Massad, that said some of
those bumper stickers can work against you in a court of law, if you need
to shoot in self defense. Keep honking, I'm re-loading for an example.
That's another good argument for not putting stickers or signs on your vehicle...
"So, Mr. Beemerguy, at the time you shot the deceased, you had a bumper sticker that reads 'Protected by Smith & Wesson' on your car. You were just chomping at the bit for the chance to shoot somebody, eh?"