Actually, that sign, with the girl, is from a rally against a form of Child Abuse in that particular country that I can't remember. In the end the speculation ended with the fact that it was probably just put on the sign because it was cute, convenient, and put across the "finger point" of the crowd.
In the end the girl didn't know Haruhi was "the God". This picture was taken probably mid-series in the subbed versions.
~Chun