If they exhibited some good grace they would put up their displays at a different time than the Christians, just as other religions demonstrate their good will and good sense by keeping their displays separate during the Christmas season.
But of course if the Satanists put up their display on it's own at any other time of the year no one would pay them any attention, and that''s the problem for these dullwits.
I guess the staff should have no religious rights. Do you think public schools should be ran by Big Brother, or the local citizens?
“Egotist, n. A person of low taste, more interested in himself than in me.”
― Ambrose Bierce, The Unabridged Devil's Dictionary