You are right that the little I wrote about the Scapegoat is rather rudimentary. In this format I could not write at great length about this fascinating subject. I did though in a Hebrew article which appears in this weekend's magazine. So if you can I suggest you read it. In it you will find that the interpretation of the ceremony more or less as I described it is not a product of modern bible criticism but rather the interpretation of two major rabbis Abraham Ibn Ezra (1164-1089) and Nahmanides (1270-1194). Though my treatment of the matter is somewhat is somewhat bemused and yes irreverent, I hope it encourages my readers to read on elsewhere. The Jewish Encyclopedia being a good online start.
Migrants rush train tracks as Budapest station reopens (dpa)
from the article: 10 things you probably don’t know about Yom Kippur