I think it would be tasteless, a la the Sarah Palin target crosshair thing last election cycle, but it wouldn't be as overtly offensive since it doesn't carry the weight of a century of Jim Crow history, where black people who got out of line were hung from trees. While I don't view this as any kind of actual threat of violence, I don't see the difference between this and straight up calling Obama a nigger. There is no way to interpret this other than racial degradation. That said, if this guy is proud that he's a racist, then at least he's being honest about it. He just shouldn't be surprised that so many people are offended. Like I said above, there's free expression but that doesn't mean that there aren't consequences for expressing yourself.