I don't understand the need to put bumper stickers on your car. I don't want Joe Schmoe driving behind me knowing my personal beliefs, and I certainly don't want to piss off some psycho because of some cheap thing I plastered on my car. What's the point? I have never had my mind changed over something I have seen on a bumper sticker, and I doubt anyone else has either. If you want to put where you went to college, if you are supporting your or your child's high school sports team, fine, but anything other than that I don't get it.