If the Chickens Stop Swinging Judaism as we Know it will fall Apart

Attempting to change religious traditions can often lead to heavy opposition by more fundamentalist groups. In this case, the tradition in question is swinging a chicken above one's head, then cutting its neck and letting it run around spraying blood everywhere. One rabbi when asked about ending this practice of animal-cruelty said that "the generation that will stop doing this ritual will give birth to a generation that will stop observing the day of atonement, and the generation that will stop observing the day of atonement, will give birth to a generation that will marry non-Jews."

http://www.abc.net.au/correspondents/content/2006/s1752634.htm