Demon
The contemporary Roman Catholic Church unequivocally teaches that angels and demons are real beings rather than just symbolic devices. The Catholic Church has a cadre of officially sanctioned exorcists which perform many exorcisms each year. The exorcists of the Catholic Church teach that demons attack humans continually but that afflicted persons can be effectively healed and protected either by the formal rite of exorcism, authorized to be performed only by bishops and those they designate, or by prayers of deliverance, which any Christian can offer for themselves or others.
Exorcism
The leaders of the exorcisms create a dramatic performance to call out the demons so the village can once again have peace. The leaders strike themselves with a sharp weapon so they bleed. Blood is considered to be a protector, so after the rituals, the blood is blotted with a tissue and put on the door of houses as an act of protection against evil spirits.