The important thing for the folks in these places to do is get the crèche away from your municipal building and put it in a park instead. A crèche in front of a government building implies government sponsorship, while a crèche in a park or similar public space is protected under the First Amendment.
“The important thing for the folks in these places to do is get the crèche away from your municipal building and put it in a park instead.”
That won’t satisfy them.