God's chosen doing chosen things. Instead of promoting good will and encouraging moral behavior. They do their stereotypical things and project their sins onto others.
The likely origin of this barbaric practice is Babylon, where they embraced their pedopholific talmud. Every year in Babylon they would release a prisoner and crown him king for the day. They would then sacrifice the prisoner/king to atone for the sins of real king who was very likely a degenerate pedophile. Not much has changed in the past 3000 years.