You are insisting that the constitution says what it does not, just like the moms needing action. I have not argued schools should be required to post the Ten Commandment. But saying that the posting of them is “establishment of a government religion“ is also ridiculous. What Jefferson says and what was ratified in the constitution are two different things.The First Amendment literally prohibits the establishment of religion by the government. If you don't believe that posting religious text on the walls of public, government funded schools is an element of establishing religion, then you shouldn't be shocked when some want to take your guns because you don't belong to a well-regulated militia. We either pay attention to the intent of the founding fathers outside of the text of the Constitution, known by their published speeches and writings, or we let Karen decide if you are in a militia or not.
If we are ignoring the ideas of the founding fathers, I guess Thomas Jefferson can be told, posthumously of course, to go pound sand.
“Believing with you that religion is a matter which lies solely between Man & his God, that he owes account to none other for his faith or his worship, that the legitimate powers of government reach actions only, & not opinions, I contemplate with sovereign reverence that act of the whole American people which declared that their legislature should make no law respecting an establishment of religion, or prohibiting the free exercise thereof, thus building a wall of separation between Church & State.”
Thomas Jefferson - Jan. 1, 1802