When something doesn’t go right, we find somebody/something to pin it on.

While unfair, condemning an external other provides two vital functions: blaming releases us of responsibility and our deep seated fear of being out of control now has an actionable target.

Scapegoating is a "regulatory outlet" bleeding off rage by condemning others, which requires staying blind to reality to govern our emotions. All it requires is sacrificing others because of our weaknesses.