everyone has to serve atleast 85% of their time

Define "act of violence." It actually must be a violent ACT, not just some harsh words. Violence against ANYBODY is a crime. Report it to your local law enforcement authorities.

When sexual or physical abuse is involved, it is a violent crime.

"Most Crime Scene Technicians tend to have degrees in chemistry and basic healthcare with a bit of work in law enforcement, however law enforcement experience is not always required."

As a citizen, you do not have a duty to act. You may ignore it if you wish, but most would appreciate if you assisted law enforcement.