Violence in the workplace and bullying and harassment

After watching the posted Youtube videos on violence (Forever Changed – Violence & Aggression 2) and bullying and harassment in the workplace (Bullying and Harassment in Construction – Not Part of the Job (Scenario 1, Scenario 2, and Scenario 3), please discuss if you would have handled each of the four scenarios differently than how the workers, managers, or supervisors in the videos handled the situation.  Please describe what you would have done differently.

Please discuss why are many of the violence in the workplace and bullying and harassment situations difficult to prevent, and why are often difficult to investigate.  Are violence in the workplace and bullying and harassment really an HR issue, or are they a health and safety issue?  Please describe your position.