First of all, I don't know any atheist (and I know many atheists) that symolize their belief system with "There is no God" rather they are ambivilent toward a higher power and symolize themselves more with nature, the seasons, money, politics, science or something else. However for arguments sake, no I wouldn't have a problem with it. I might have a problem with the "Jesus Christ was a lying false prophet" part, because that is just an attack against my religion more than a symbol of atheism. My cross doesn't harm, hurt, attack or degrade any other religion. It symbolizes my religion, but does not say "there is no buddah" etc. So my answer is no, I would not have a problem with any symbol of atheism that did not go out of its way to hurt another religion (whether it be Christianity, Islam, Buddist, Judaism, etc) As I said before, in my town you can't go 50 feet without seeing a Star of David. I don't know if it is on public property or not, but I don't care. It is not about me. It is about the people in my community though, and it makes them happy. They have never had a problem with my Christianity either.