My family insisted that I remove my Obama/Biden 2012 bumper sticker because they fear for my safety. I had the sticker on for little more than a week, and during that time I was yelled at, flipped off, honked at, tailgated and generally made to feel like I was in danger.
I see a Romney/Ryan bumper sticker, and guess what? I don't care! In fact, it generally makes me glad that people are actually interested in their candidate and feel free to make that known.
We have freedom of speech in this country. We should not be made to fear for our well-being by simply stating our choice of candidate on a bumper sticker.