The scapegoat is the one who pays for the faults of others: the expression originates from the ritual sacrifice of a goat (kid or billy goat) to atone for the sins of the people of Israel, as narrated in the book of Leviticus. A solemn barrabasada (in this case, the expression comes from the villain of Christianity, Barabbas). Today we continue to practice goat sacrifices, but metaphorical sacrifices, bloodless, of a mouth or a tweet. They work quite well as a mechanism for us to vent.