Pick, freeze, personalize, polarize the target
Institutions escape accountability by spreading responsibility across departments, committees and higher authorities, so an abstract target can always pass the blame along. The organiser picks one specific target, freezes it so it cannot shift blame, attaches it to a named person, and polarizes the issue into good versus bad, because people act on a clear adversary and not on a complex system. Nuance is set aside during the fight and brought back at the negotiating table.