The word for today is…
scapegoat (noun) – 1. One that is made to bear the blame of others.
2. (Bible) A live goat over whose head Aaron confessed all the sins of the children of Israel on the Day of Atonement. The goat, symbolically bearing their sins, was then sent into the wilderness.
Source : The Free Dictionary
Etymology : On Yom Kippur, the ancient Hebrews would sacrifice one goat for the Lord and lead another one into the wilderness bearing the sins of the people. The ceremony is described in Leviticus, where it is said that one lot shall be cast for the Lord and one for “Azazel.” Modern scholars usually interpret Azazel as being the name of a demon living in the desert, but ancient biblical translators thought Azazel referred to the goat itself, apparently confusing it with the Hebrew phrase ez ozel, meaning “goat that departs.” The mistranslation was carried through Greek and Latin into a 16th-century English translation, where the word for the goat was rendered as scapegoote; that is, “goat that escapes.” The extended senses of scapegoat we use today evolved from this biblical use.