The Ten Commandments, given to Moses by God for the children of Israel to follow, are not primarily religious. Their concern is largely social, rooted in love, and all of them are relational in their thrust. Four Commandments address the human-divine relationship; six of them address human-to-human relationships.
It's time religious and political crusaders wake up to the fact that the Ten Commandments were written in ancient times and as such reflect ancient values that are largely obsolete in the modern age. Beyond legal concerns about placing a religious monument on public grounds the Ten Commandments are simply outdated.