September 01, 2024 How ‘scab’ became an insult used by unions in the labor movement Its use actually dates to medieval Europe. BY The Conversation Over its long history, the American labor movement has displayed a remarkably rich vocabulary for shaming those deemed traitors to its cause. Some insults, such as blackleg, are largely forgotten today. … Continue reading How ‘scab’ became an insult used by unions in the labor movement →