Even still, while your point may apply to some, for others it might be something else. Besides, Christianity really is our culture - it's traditions are woven into the very fabric of who we all are as a people. We are the Western World.
...The least you could do is entertain the notion of preserving our heritage.
If you wanted to preserve the culture of the United States, how does displaying the ten commandments do that? The ten commandments do not reflect our laws. Only two, two and half at best, are actually illegal, the rest are either perfectly legal, protected rights in the Constitution, or the very basis for our economic system, a system that Christians have no problem endorsing and defending.
How does that reflect our culture? And, since the Constitution does specifically prohibit the government endorsing any one religion, wouldn't that reflect our country and its culture more than some set of laws in a religious text, most of which don't even apply? Unless you're gunning for a theocracy...which would very much NOT reflect the culture of the United States.
Thing is, while Christianity may well be part of our culture, so are a lot of things. For example, rebelling against authority is also part of our culture, this nation was founded by doing exactly that, including a specific act where Americans stole tea and dumped it in Boston Harbor. When our own government imposed laws that many Americans disagreed with, specifically prohibiting alcohol, Americans rebelled and built and entire system of speakeasies and organized crime to bring alcohol to people who wanted it. For that matter, there are many Americans who believe the second amendment was put in the Constitution to allow private citizens the arms they'd need to rebel against an authoritarian government. It can easily be said that rebelling against authority is very much part of American culture and heritage.
Why not display those historic events that reflect our culture and heritage on school walls instead?
-- A2SG, if, in fact, that's truly what this is all about.....