The upside-down cross
The crosses are upside-down, that's a satanic symbol, explains the young priest knowledgeably. Right, I guess that's why the Pope has one on the back of the papal throne. Maybe nobody told the priest that the upside-down cross is the symbol of St Peter and the Papacy itself. St Peter asked to be crucified upside-down when he was executed, saying that he was unworthy to be crucified in the same position as Jesus. Ever since then the upside-down cross has been the sacred symbol of St Peter's successors, the Popes.
The movie sucks too.