I think they allow the 10 commandments in front of court houses based on the fact that they contributed to western and American law. It does not make sense to put statues of Satan in front of courthouses because Satanism has not contributed positively toward our legal system. I would imagine courts would allow the Hammurabi code to be displayed in front of a courthouse. It is tradition to have Lady Justice statues as well.But which is better, for there to be no 10 commandments in front of a courthouse, but they take down the statue of Lady Justice, the detestable false goddess of the Romans, or to keep them both up