Improvised correctional staff defensive weapons
I carry a regular hair comb. It is an unbreakable comb that I carry all the time. Although you cannot stab with the comb, it can be used very effectively to slash with to keep you or your fellow staff members safe during a life threatening assault.”
The same can be said for using a pen, a set of keys, a clipboard, or a chair as a defensive weapon. When caught in a position of dis-advantage, you need to do what you need to do to survive the encounter. Remember that all “justifiable” techniques aren’t trained.