BBC News - Polish Catholic Church in Halloween warning
Party poopers.One archbishop said the 31 October celebrations were promoting paganism to young people.
Archbishop Andrzej Dziega warned that Halloween was behind a "culture of death".
"This kind of fun, tempting children like candy, also poses the real possibility of great spiritual damage, even destroying spiritual life," the archbishop of Szczecin-Kamien wrote in a letter to be read out at Sunday sermons, according to the Polish Press Agency.
He wrote that "irresponsible and anti-Christian fun" introduced young people to a "world of darkness, including devils, vampires and demons" in the name of "fun".