It is like someone telling a resident of an African slum that they are poor because Americans stole their money. Or the Islamic Clerics who tell their flock that vaccinations against disease is a plot to make them infertile.
It is a pretty successful tactic to tell people that their problems have always been created by someone else, and those people are really, really evil.
One of the hardest things for any adult to do is to accept that the foundational assumptions of his world view are wrong. Many people would rather die than change their world view. Myths that demonize others give them a fig leaf to believe in, instead of requiring them to question their assumptions.
The tendency to scapegoat is a constant of the human condition to be factored in like any other tendency.
Years ago I read a science fiction story that predicted organ theft would become common once it became more technologically feasible. I hope we are not approaching such a condition.