There’s obviously an association between the signs and Obama, but the bear doesn’t necessarily mean what you think it means. You specifically noted that it’s a black bear, but… polar bears are in pretty short supply in NC.
For all we know, the message may be that Obama’s bear policy sucks.
OF COURSE! How could I have been so dumb? A black bear with a bullet in his head, draped in Obama signs is just some fool’s funny-haha joke! About bear policy. Or wasting paper on campaign signs. Headshots are very subtle that way.
Bear corpse, as opposed to wolf, deer, heffalump or whatever other large fauna are readily available for shootin’ in North Carolina: not clearly significant.
I realize that you’re worried because they shot the bear, and I don’t think anyone would dispute that there are rumblings about assassination attempts should he win*. I just don’t think this is necessarily tied into all that. Lots of people shoot bears. The same people don’t normally shoot people too.
*My cube neighbor, a fiftysomething black woman, is actively praying for Obama to lose the election because she doesn’t want him to get killed.