Others here can follow the conversation, and see for themselves how it went down. Now with that said, I can tell you for sure that your view is unconstitutional. From the Constitution of the United States......
"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."
There it is in black and white.
1) While it says Congress, The Supreme Court ruled, in Everson v. Board of Education (330 U.S. 1), that the Establishment Clause also applies to state and local governments, not just the federal government.
2) But what was on the mind of our forefathers, when the penned the First Amendment. It is pretty straightforward, when you look at this writing penned by Thomas Jefferson himself.
"Believing with you that religion is a matter which lies solely between man and his God, that he owes account to none other for his faith or his worship, that the legislative powers of government reach actions only, and 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 and State."
-Thomas Jefferson
3) Now, while the meaning of the establishment clause is still up in the air, as to whether or not ANY religious symbols or writings are allowed to by put on public buildings, it is clear no government is allowed to pick and choose one religion over the other as to the choosing of those religious symbols or writings. For in doing so, they are "Prohibiting the free exercise thereof" to other religions, as defined in the First Amendment. This is unconstitutional.
4) Now for the icing on the cake. How did our forefathers feel about religions other than Christianity? Thomas Jefferson again....
"Where the preamble declares, that coercion is a departure from the plan of the holy author of our religion, an amendment was proposed by inserting "Jesus Christ," so that it would read "A departure from the plan of Jesus Christ, the holy author of our religion;" the insertion was rejected by the great majority, in proof that they meant to comprehend, within the mantle of its protection, the Jew and the Gentile, the Christian and Mohammedan, the Hindoo and Infidel of every denomination. "
-Thomas Jefferson
That's right. Freedom of religion does not apply to just one religion. It applies to ALL religions, and no government is allowed to pick and choose which religions are going to be favored. If that upsets you, then maybe you should just move to a nation that practices theocracy, because that is exactly what you are promoting. You might try Iran. While the Mullahs there might disagree with which religion you would choose to foist on the people, they would certainly agree with you that government should be dictated by a single religion of their choosing. That is not only unamerican, but is a view that is dangerous to the American way of life itself.