The Knights of Columbus currently have a sign reading “Keep Christ in Christmas” on government property (without a permit) in Pitman, New Jersey.
Ok. We’ve played this game before. All you have to do is make a request for your atheist holiday banner to be displayed on the same property and you can’t be denied.
So that’s what the Freedom From Religion Foundation did. They applied for a permit to display their sign, which read, “Keep Saturn in Saturnalia”: