In the tradition of Kaporos, OrthodoxJews make an offering to God in the form of an item. The item is swung three times over the practitioner’s head. Though a mere bag of coins is allowed to be sacrificed for Kaporos, the other variant, a living chicken, has caused considerable controversy stemming from their use by the Hasidic Jewish community of Crown Heights, Brooklyn.
The chickens are slaughtered in order to transfer the practitioner's sins over the past year, and to repent for them. This year, the Hasidic community of Crown Heights ordered 50,000 or more chickens to be slaughtered in the ritual.