I suspect that wearing your thoughts on your car, either on a bumper sticker or a license plate, can open you up to the crazies from either side of an issue taking out their aggression on your car if you leave it unattended in places like a parking lot etc. I wonder how many people get their cars keyed from plates and stickers?

I know my sister had an inflamatory anti-fur bumper sticker on her car, and another anti-meat one, and came down to find 2 of her tires slashed in the parking lot of her building one morning -- again, no proof, but we had out suspicions on that one.

In the past when i was driving a smaller car, my dad would offer to loan me his SUV to drive from Toronto to Montreal to visit my friends in the winter -- i always declined since he has a 'Toronto Maple Leafs' plate, and going into 'Habs' land with one of those would likely be taking my life into my hands