Enough with the violence

That level of violence is unacceptable, and if management doesn't see a problem with losing all of their staff to disability, PTSD, and unwillingness to take the abuse that is a huge problem, and unfortunately one you are not likely to solve on your own. You can either try to join forces with other staff to make change (which is unlikely to happen if this is entrenched culturally as acceptable) or you can leave for a better work environment.

You could also report the facility to the state ombudsman / JACHO or appropriate licensing agency re: unsafe work conditions and lack of safety for patients (I'm assuming if staff are being assaulted patients are also at risk, and patient risk generally gets response) as sometimes the threat of being shutdown/losing accreditation is enough to make management change course - but this can also make life MUCH more stressful in the short-term while investigation/changes take place.

I'm sorry you're going through this.

For me? I would get out ASAP before I lose a limb or my license. We are nurses, not saviors. TBH I have zero faith in hospital management or doctors. If I want to make changes, I would wait until I am in management and out of harms way. One of my friends put up with this kind of environment and now she's at risk for being sued after a sentinel event. The hospital didn't hesitate a minute to fire her and she was devastated and developed panic attacks.

There are many outpatient psych facilities (or correctional facilities) that are safer and you will still take caring for psych patients. If you get burnt out or have to go on disability, you're not doing patients any favors.