Policemen so cherish their status as keepers of the peace and protectors of the public that they have occasionally been known to beat to death those citizens or groups who question that status.
Bio: Murray Sidman was a pioneering behavioral scientist, best known for Sidman Avoidance, also called "free-operant avoidance", in which an individual learns to avoid an aversive stimulus by remembering to produce the response without any other stimulus.