It is difficult to design a training method to assist people to conceptualize how things go in atypical events. Your audience could be police recruits in the Academy, or citizens, or members of a jury. Most people have "normal" life experiences which means that they probably have not had that much experience in dealing with violent or drunk or drugged or crazy people.
Properly designed scenario training can help. I've been subjected to so much poorly designed and poorly conducted scenario training in my life that I'm traumatized . . .